An update of the openssh package has been released.

The remote CentOS Linux 9 host has packages installed that are affected by a vulnerability as referenced in the openssh-8.7p1-45.el9 build changelog.

  - A vulnerability was found in OpenSSH when the VerifyHostKeyDNS option is enabled. A machine-in-the-middle     attack can be performed by a malicious machine impersonating a legit server. This issue occurs due to how     OpenSSH mishandles error codes in specific conditions when verifying the host key. For an attack to be     considered successful, the attacker needs to manage to exhaust the client's memory resource first, turning     the attack complexity high. (CVE-2025-26465)

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

According to the versions of the openssh packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

    A vulnerability was found in OpenSSH when the VerifyHostKeyDNS option is enabled. A machine-in-the-middle     attack can be performed by a malicious machine impersonating a legit server. This issue occurs due to how     OpenSSH mishandles error codes in specific conditions when verifying the host key. For an attack to be     considered successful, the attacker needs to manage to exhaust the client's memory resource first, turning     the attack complexity high.(CVE-2025-26465)

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

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

The remote AlmaLinux 8 host has packages installed that are affected by a vulnerability as referenced in the ALSA-2025:16823 advisory.

    * openssh: Machine-in-the-middle attack if VerifyHostKeyDNS is enabled (CVE-2025-26465)

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

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

The version of AHV installed on the remote host is prior to 10.0.1.6 / AHV-10.0.1.6. It is, therefore, affected by multiple vulnerabilities as referenced in the NXSA-AHV-10.0.1.6 advisory.

  - A heap-buffer-overflow (off-by-one) flaw was found in the GnuTLS software in the template parsing logic     within the certtool utility. When it reads certain settings from a template file, it allows an attacker to     cause an out-of-bounds (OOB) NULL pointer write, resulting in memory corruption and a denial-of-service     (DoS) that could potentially crash the system. (CVE-2025-32990)

  - A flaw was found in GnuTLS. A double-free vulnerability exists in GnuTLS due to incorrect ownership     handling in the export logic of Subject Alternative Name (SAN) entries containing an otherName. If the     type-id OID is invalid or malformed, GnuTLS will call asn1_delete_structure() on an ASN.1 node it does not     own, leading to a double-free condition when the parent function or caller later attempts to free the same     structure. This vulnerability can be triggered using only public GnuTLS APIs and may result in denial of     service or memory corruption, depending on allocator behavior. (CVE-2025-32988)

  - A NULL pointer dereference flaw was found in the GnuTLS software in _gnutls_figure_common_ciphersuite().
    (CVE-2025-6395)

  - Vim is an open source, command line text editor. Prior to version 9.1.1552, a path traversal issue in     Vim's tar.vim plugin can allow overwriting of arbitrary files when opening specially crafted tar archives.
    Impact is low because this exploit requires direct user interaction. However, successfully exploitation     can lead to overwriting sensitive files or placing executable code in privileged locations, depending on     the permissions of the process editing the archive. The victim must edit such a file using Vim which will     reveal the filename and the file content, a careful user may suspect some strange things going on.
    Successful exploitation could results in the ability to execute arbitrary commands on the underlying     operating system. Version 9.1.1552 contains a patch for the vulnerability. (CVE-2025-53905)

  - Vim is an open source, command line text editor. Prior to version 9.1.1551, a path traversal issue in     Vim's zip.vim plugin can allow overwriting of arbitrary files when opening specially crafted zip archives.
    Impact is low because this exploit requires direct user interaction. However, successfully exploitation     can lead to overwriting sensitive files or placing executable code in privileged locations, depending on     the permissions of the process editing the archive. The victim must edit such a file using Vim which will     reveal the filename and the file content, a careful user may suspect some strange things going on.
    Successful exploitation could results in the ability to execute arbitrary commands on the underlying     operating system. Version 9.1.1551 contains a patch for the vulnerability. (CVE-2025-53906)

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

The remote SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 / openSUSE 15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2025:0585-1 advisory.

    - CVE-2025-26465: Fixed MitM attack against OpenSSH's VerifyHostKeyDNS-enabled client (bsc#1237040).
    - CVE-2025-26466: Fixed DoS attack against OpenSSH's client and server (bsc#1237041).

Tenable has extracted the preceding description block directly from the SUSE 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 Fedora 40 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2025-62f6cb2785 advisory.

    Fix missing error codes set and invalid error code checks in OpenSSH. It     prevents memory exhaustion attack and a MITM attack when VerifyHostKeyDNS     is on (CVE-2025-26465, CVE-2025-26466).

Tenable has extracted the preceding description block directly from the Fedora 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 host is running a version of macOS / Mac OS X that is 14.x prior to 14.7.6. It is, therefore, affected by multiple vulnerabilities:

  - A vulnerability was found in OpenSSH when the VerifyHostKeyDNS option is enabled. A machine-in-the-middle     attack can be performed by a malicious machine impersonating a legit server. This issue occurs due to how     OpenSSH mishandles error codes in specific conditions when verifying the host key. For an attack to be     considered successful, the attacker needs to manage to exhaust the client's memory resource first, turning     the attack complexity high. (CVE-2025-26465)

  - A stack overflow vulnerability exists in the libexpat library due to the way it handles recursive entity     expansion in XML documents. When parsing an XML document with deeply nested entity references, libexpat     can be forced to recurse indefinitely, exhausting the stack space and causing a crash. This issue could     lead to denial of service (DoS) or, in some cases, exploitable memory corruption, depending on the     environment and library usage. (CVE-2024-8176)

  - A flaw was found in the OpenSSH package. For each ping packet the SSH server receives, a pong packet is     allocated in a memory buffer and stored in a queue of packages. It is only freed when the server/client     key exchange has finished. A malicious client may keep sending such packages, leading to an uncontrolled     increase in memory consumption on the server side. Consequently, the server may become unavailable,     resulting in a denial of service attack. (CVE-2025-26466)

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

The remote host is running a version of macOS / Mac OS X that is 15.x prior to 15.5. It is, therefore, affected by multiple vulnerabilities:

  - A vulnerability was found in OpenSSH when the VerifyHostKeyDNS option is enabled. A machine-in-the-middle     attack can be performed by a malicious machine impersonating a legit server. This issue occurs due to how     OpenSSH mishandles error codes in specific conditions when verifying the host key. For an attack to be     considered successful, the attacker needs to manage to exhaust the client's memory resource first, turning     the attack complexity high. (CVE-2025-26465)

  - A stack overflow vulnerability exists in the libexpat library due to the way it handles recursive entity     expansion in XML documents. When parsing an XML document with deeply nested entity references, libexpat     can be forced to recurse indefinitely, exhausting the stack space and causing a crash. This issue could     lead to denial of service (DoS) or, in some cases, exploitable memory corruption, depending on the     environment and library usage. (CVE-2024-8176)

  - A privacy issue was addressed with improved private data redaction for log entries. This issue is fixed in     macOS Ventura 13.7.6, macOS Sequoia 15.5, macOS Sonoma 14.7.6. An app may be able to access sensitive user     data. (CVE-2025-24142)

  - This issue was addressed with improved handling of floats. This issue is fixed in tvOS 18.5, Safari 18.5,     iPadOS 17.7.7, iOS 18.5 and iPadOS 18.5, macOS Sequoia 15.5, watchOS 11.5, visionOS 2.5. A type confusion     issue could lead to memory corruption. (CVE-2025-24213)

  - The issue was addressed with improved memory handling. This issue is fixed in macOS Sequoia 15.5.
    Processing maliciously crafted web content may lead to an unexpected process crash. (CVE-2025-24222)

Note that Nessus has not tested for these issues but has instead relied only on the operating system'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
216579	Photon OS 4.0: Openssh PHSA-2025-4.0-0757	Nessus	PhotonOS Local Security Checks	2025/2/21	2025/4/17	medium
216704	CentOS 9 : openssh-8.7p1-45.el9	Nessus	CentOS Local Security Checks	2025/2/24	2025/4/17	medium
235417	EulerOS 2.0 SP12 : openssh (EulerOS-SA-2025-1430)	Nessus	Huawei Local Security Checks	2025/5/6	2025/5/6	medium
235758	EulerOS 2.0 SP10 : openssh (EulerOS-SA-2025-1531)	Nessus	Huawei Local Security Checks	2025/5/12	2025/5/12	medium
266343	AlmaLinux 8 : openssh (ALSA-2025:16823)	Nessus	Alma Linux Local Security Checks	2025/10/1	2025/10/1	medium
303852	Nutanix AHV : Multiple Vulnerabilities (NXSA-AHV-10.0.1.6)	Nessus	Misc.	2026/3/26	2026/7/15	high
216453	SUSE SLED15 / SLES15 / openSUSE 15 Security Update : openssh (SUSE-SU-2025:0585-1)	Nessus	SuSE Local Security Checks	2025/2/19	2025/4/17	medium
216684	Fedora 40 : openssh (2025-62f6cb2785)	Nessus	Fedora Local Security Checks	2025/2/24	2025/4/17	medium
235717	macOS 14.x < 14.7.6 Multiple Vulnerabilities (122717)	Nessus	MacOS X Local Security Checks	2025/5/12	2026/1/21	medium
235718	macOS 15.x < 15.5 Multiple Vulnerabilities (122716)	Nessus	MacOS X Local Security Checks	2025/5/12	2026/1/21	medium

检测

插件搜索

medium

medium

medium

medium

medium

high

medium

medium

medium

medium