The Rocky Linux 8.6 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ ciqsa-2026_1742 advisory.

    This advisory aggregates security fixes for the openssh SRPM in CIQ LTS 8.6. It addresses 21 CVEs:
    CVE-2025-26465, CVE-2026-35388, CVE-2026-59999, CVE-2026-73282, CVE-2026-55653, and 16 more.

Tenable has extracted the preceding description block directly from the CIQ security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:76748 advisory.

    OpenSSH is an SSH protocol implementation supported by a number of Linux, UNIX, and similar operating     systems. It includes the core files necessary for both the OpenSSH client and server.

    Security Fix(es):

    * openssh: Local MITM of X11 forwarding via abstract UNIX socket pre-binding in Red Hat Enterprise Linux     OpenSSH client versions (CVE-2026-55655)

    * openssh: Double free in Red Hat Enterprise Linux versions of OpenSSH DH-GEX client path during FIPS     known-group validation leads to client-side denial of service (CVE-2026-55653)

    * openssh: OpenSSH: sftp client allows attacker to control downloaded file location (CVE-2026-59995)

    * openssh: OpenSSH: Brute-force attacks facilitated due to insufficient authentication delay     (CVE-2026-60001)

    * openssh: OpenSSH sshd: Security bypass due to incorrect handling of forwarding and tunneling options     (CVE-2026-59999)

    * openssh: OpenSSH: `scp` file misplacement vulnerability during remote copy (CVE-2026-59996)

    * openssh: OpenSSH: Information disclosure and data corruption via use-after-free in ssh client     (CVE-2026-73282)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:89739 advisory.

    OpenSSH is an SSH protocol implementation supported by a number of Linux, UNIX, and similar operating     systems. It includes the core files necessary for both the OpenSSH client and server.

    Security Fix(es):

    * openssh: Local MITM of X11 forwarding via abstract UNIX socket pre-binding in Red Hat Enterprise Linux     OpenSSH client versions (CVE-2026-55655)

    * openssh: Double free in Red Hat Enterprise Linux versions of OpenSSH DH-GEX client path during FIPS     known-group validation leads to client-side denial of service (CVE-2026-55653)

    * openssh: OpenSSH: sftp client allows attacker to control downloaded file location (CVE-2026-59995)

    * openssh: OpenSSH: Use-after-free vulnerability during host key re-exchange on the client side     (CVE-2026-60002)

    * openssh: OpenSSH sshd: Security bypass due to incorrect handling of forwarding and tunneling options     (CVE-2026-59999)

    * openssh: OpenSSH: `scp` file misplacement vulnerability during remote copy (CVE-2026-59996)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:47755 advisory.

    OpenSSH is an SSH protocol implementation supported by a number of Linux, UNIX, and similar operating     systems. It includes the core files necessary for both the OpenSSH client and server.

    Security Fix(es):

    * openssh: Local MITM of X11 forwarding via abstract UNIX socket pre-binding in Red Hat Enterprise Linux     OpenSSH client versions (CVE-2026-55655)

    * openssh: Double free in Red Hat Enterprise Linux versions of OpenSSH DH-GEX client path during FIPS     known-group validation leads to client-side denial of service (CVE-2026-55653)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2026-2031 advisory.

    A flaw was found in OpenSSH. A malicious SSH server can exploit a double free vulnerability in the Diffie-     Hellman Group Exchange (DH-GEX) client path. This occurs during FIPS (Federal Information Processing     Standards) mode known-group validation when the client processes attacker-controlled DH-GEX group     parameters. Successful exploitation leads to client-side process termination, resulting in a Denial of     Service (DoS). (CVE-2026-55653)

    A flaw was found in OpenSSH. A local unprivileged attacker on a Linux client host can hijack client-side     X11 forwarding connections. This is possible by pre-binding the preferred abstract X socket name when X11     forwarding is enabled and a local UNIX-domain X socket is used. A successful attack can compromise the     confidentiality of forwarded X11 traffic, including sensitive window contents and input, and may allow     some manipulation of the forwarded session. (CVE-2026-55655)

    scp in OpenSSH before 10.4 may place a file in the parent directory of an intended directory when the copy     occurs between two remote destinations. (CVE-2026-59996)

    ssh in OpenSSH before 10.4 can have a use-after-free when a server changes its host key during a key re-     exchange. (This outcome occurs only on the client side.) (CVE-2026-60002)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote RockyLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2026:47756 advisory.

    * openssh: Local MITM of X11 forwarding via abstract UNIX socket pre-binding in Rocky Linux OpenSSH client     versions (CVE-2026-55655)

    * openssh: Double free in Rocky Linux versions of OpenSSH DH-GEX client path during FIPS known-group     validation leads to client-side denial of service (CVE-2026-55653)

    * openssh: Heap out-of-bounds read in Rocky Linux versions of OpenSSH GSSAPI indicator cleanup due to     missing NULL sentinel termination (CVE-2026-55654)

    * openssh: OpenSSH: Use-after-free vulnerability during host key re-exchange on the client side     (CVE-2026-60002)

    * openssh: OpenSSH: `scp` file misplacement vulnerability during remote copy (CVE-2026-59996)

Tenable has extracted the preceding description block directly from the RockyLinux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote AlmaLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2026:47756 advisory.

    * openssh: Local MITM of X11 forwarding via abstract UNIX socket pre-binding in AlmaLinux OpenSSH client     versions (CVE-2026-55655)
      * openssh: Double free in AlmaLinux versions of OpenSSH DH-GEX client path during FIPS known-group     validation leads to client-side denial of service (CVE-2026-55653)
      * openssh: Heap out-of-bounds read in AlmaLinux versions of OpenSSH GSSAPI indicator cleanup due to     missing NULL sentinel termination (CVE-2026-55654)
      * openssh: OpenSSH: Use-after-free vulnerability during host key re-exchange on the client side     (CVE-2026-60002)
      * openssh: OpenSSH: `scp` file misplacement vulnerability during remote copy (CVE-2026-59996)

Tenable has extracted the preceding description block directly from the AlmaLinux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2026-47756 advisory.

    - CVE-2026-59996: Fix remote glob result of '..' causing files to be placed       in unintended parent directories when scp performs remote-to-remote copy       via the local host       Resolves: RHEL-193178
    - CVE-2026-60002: Fix use-after-free in cached hostkey during key re-exchange       Resolves: RHEL-193024
    - CVE-2026-55653: Fix double free in openssh DH-GEX client path during       FIPS known-group validation that leads to client-side denial of service       Resolves: RHEL-186439
    - CVE-2026-55654: Fix heap out-of-bounds read during GSSAPI indicator       cleanup due to missing NULL terminator       Resolves: RHEL-185836

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The Rocky Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ crlsa-2026_47755 advisory.

    * openssh: Local MITM of X11 forwarding via abstract UNIX socket pre-binding in Rocky Linux OpenSSH client     versions (CVE-2026-55655)

    * openssh: Double free in Rocky Linux versions of OpenSSH DH-GEX client path during FIPS known-group     validation leads to client-side denial of service (CVE-2026-55653)

Tenable has extracted the preceding description block directly from the CIQ security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:80513 advisory.

    OpenSSH is an SSH protocol implementation supported by a number of Linux, UNIX, and similar operating     systems. It includes the core files necessary for both the OpenSSH client and server.

    Security Fix(es):

    * openssh: Local MITM of X11 forwarding via abstract UNIX socket pre-binding in Red Hat Enterprise Linux     OpenSSH client versions (CVE-2026-55655)

    * openssh: Double free in Red Hat Enterprise Linux versions of OpenSSH DH-GEX client path during FIPS     known-group validation leads to client-side denial of service (CVE-2026-55653)

    * openssh: OpenSSH: sftp client allows attacker to control downloaded file location (CVE-2026-59995)

    * openssh: OpenSSH: Brute-force attacks facilitated due to insufficient authentication delay     (CVE-2026-60001)

    * openssh: OpenSSH sshd: Security bypass due to incorrect handling of forwarding and tunneling options     (CVE-2026-59999)

    * openssh: OpenSSH: `scp` file misplacement vulnerability during remote copy (CVE-2026-59996)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The Rocky Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ crlsa-2026_47756 advisory.

    * openssh: Local MITM of X11 forwarding via abstract UNIX socket pre-binding in Rocky Linux OpenSSH client     versions (CVE-2026-55655)

    * openssh: Double free in Rocky Linux versions of OpenSSH DH-GEX client path during FIPS known-group     validation leads to client-side denial of service (CVE-2026-55653)

    * openssh: Heap out-of-bounds read in Rocky Linux versions of OpenSSH GSSAPI indicator cleanup due to     missing NULL sentinel termination (CVE-2026-55654)

    * openssh: OpenSSH: Use-after-free vulnerability during host key re-exchange on the client side     (CVE-2026-60002)

    * openssh: OpenSSH: `scp` file misplacement vulnerability during remote copy (CVE-2026-59996)

Tenable has extracted the preceding description block directly from the CIQ security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The Rocky Linux 10.2 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ crlsa-2026_47757 advisory.

    * openssh: Local MITM of X11 forwarding via abstract UNIX socket pre-binding in Rocky Linux OpenSSH client     versions (CVE-2026-55655)

    * openssh: Double free in Rocky Linux versions of OpenSSH DH-GEX client path during FIPS known-group     validation leads to client-side denial of service (CVE-2026-55653)

    * openssh: Heap out-of-bounds read in Rocky Linux versions of OpenSSH GSSAPI indicator cleanup due to     missing NULL sentinel termination (CVE-2026-55654)

    * openssh: OpenSSH: Use-after-free vulnerability during host key re-exchange on the client side     (CVE-2026-60002)

    * openssh: OpenSSH: `scp` file misplacement vulnerability during remote copy (CVE-2026-59996)

Tenable has extracted the preceding description block directly from the CIQ security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:99573 advisory.

    OpenSSH is an SSH protocol implementation supported by a number of Linux, UNIX, and similar operating     systems. It includes the core files necessary for both the OpenSSH client and server.

    Security Fix(es):

    * openssh: Local MITM of X11 forwarding via abstract UNIX socket pre-binding in Red Hat Enterprise Linux     OpenSSH client versions (CVE-2026-55655)

    * openssh: Double free in Red Hat Enterprise Linux versions of OpenSSH DH-GEX client path during FIPS     known-group validation leads to client-side denial of service (CVE-2026-55653)

    * openssh: OpenSSH: sftp client allows attacker to control downloaded file location (CVE-2026-59995)

    * openssh: OpenSSH sshd: Security bypass due to incorrect handling of forwarding and tunneling options     (CVE-2026-59999)

    * openssh: openssh: Information disclosure via shared compression side-channel (CVE-2026-106582)

    * openssh: OpenSSH: Credential disclosure via failed GSSAPI authentication (CVE-2026-106553)

    * openssh: openssh: Denial of service via oversized decompressed packets (CVE-2026-106585)

    * openssh: openssh: Command injection via unvalidated command-line username (CVE-2026-106583)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	名称	产品	系列	发布时间	最近更新时间	严重程度
374795	Rocky Linux 8.6 [CIQ] Security Update: openssh / openssh-askpass / openssh-cavs / openssh-clients / etc Multiple Vulnerabilities (ciqsa-2026_1742)	Nessus	Rocky Linux Local Security Checks	2026/11/1	2026/11/2	medium
363383	RHEL 10 : openssh (RHSA-2026:76748)	Nessus	Red Hat Local Security Checks	2026/10/6	2026/10/20	high
372008	RHEL 9 : openssh (RHSA-2026:89739)	Nessus	Red Hat Local Security Checks	2026/10/26	2026/10/26	critical
330865	RHEL 8 : openssh (RHSA-2026:47755)	Nessus	Red Hat Local Security Checks	2026/7/30	2026/7/30	medium
332008	Amazon Linux 2023 : openssh, openssh-clients, openssh-keycat (ALAS2023-2026-2031)	Nessus	Amazon Linux Local Security Checks	2026/8/4	2026/8/4	critical
331313	RockyLinux 9 : openssh (RLSA-2026:47756)	Nessus	Rocky Linux Local Security Checks	2026/7/30	2026/7/30	critical
331475	AlmaLinux 9 : openssh (ALSA-2026:47756)	Nessus	Alma Linux Local Security Checks	2026/7/31	2026/7/31	critical
335463	Oracle Linux 9 : openssh (ELSA-2026-47756)	Nessus	Oracle Linux Local Security Checks	2026/8/14	2026/8/14	critical
358735	Rocky Linux 8 [CIQ] Security Update: openssh / openssh-askpass / openssh-askpass-debuginfo / etc Multiple Vulnerabilities (crlsa-2026_47755)	Nessus	Rocky Linux Local Security Checks	2026/10/1	2026/10/1	medium
368060	RHEL 9 : openssh (RHSA-2026:80513)	Nessus	Red Hat Local Security Checks	2026/10/20	2026/10/20	high
358771	Rocky Linux 9 [CIQ] Security Update: openssh / openssh-askpass / openssh-askpass-debuginfo / etc Multiple Vulnerabilities (crlsa-2026_47756)	Nessus	Rocky Linux Local Security Checks	2026/10/1	2026/10/1	critical
358807	Rocky Linux 10.2 [CIQ] Security Update: openssh / openssh-askpass / openssh-askpass-debuginfo / etc Multiple Vulnerabilities (crlsa-2026_47757)	Nessus	Rocky Linux Local Security Checks	2026/10/1	2026/10/1	critical
379611	RHEL 8 : openssh (RHSA-2026:99573)	Nessus	Red Hat Local Security Checks	2026/11/12	2026/11/12	high

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