The remote SUSE Linux SLES15 / SLES_SAP15 host has a package installed that is affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:3634-1 advisory.

    - CVE-2026-53783: rrsync restricted-directory escape (validation-vs-exec race + unsafe option allowlist)     (bsc#1269041).
    - CVE-2026-53784: Daemon module-root chdir escape under 'use chroot = no' (bsc#1269042).
    - CVE-2026-53785: --relative implied-parent creation escapes the destination tree (bsc#1269043).
    - CVE-2026-53786: Daemon --filter merge file bypasses the module filter list (bsc#1269044).
    - CVE-2026-53788: Daemon name-converter accepts newline-bearing names into its line protocol     (bsc#1269046).
    - CVE-2026-53789: Malicious sender expands --delete scope by reclassifying an implied parent     (bsc#1269047).
    - CVE-2026-53790: Command / argument injection via unquoted peer- or host-controlled values (bsc#1269048).
    - CVE-2026-53791: PROXY-protocol mode lets a direct client spoof the daemon's source address     (bsc#1269049).
    - CVE-2026-53792: Receiver-supplied zero checksum block length drives sender matching negative     (bsc#1269050).
    - CVE-2026-53793: Chroot '/./' inner-module escape via a parent-component symlink (bsc#1269051).
    - CVE-2026-53794: Remote peer disables the per-allocation sanity cap via --max-alloc=0 (bsc#1269052).
    - CVE-2026-53795: Receiver write escape via an absolute --temp-dir / --link-dest disabling rename/link     confinement       (bsc#1269053).
    - CVE-2026-53796: Non-daemon receiver destination-chdir symlink race (TOCTOU) (bsc#1269054).
    - CVE-2026-53797: Sender source-tree parent-component symlink race -> out-of-tree disclosure     (bsc#1269055).
    - CVE-2026-53798: Daemon name-converter empty response maps an unknown name to uid/gid 0 (bsc#1269045).
    - CVE-2026-53799: Receiver ACL/xattr application follows a symlink-race -> arbitrary ACL set (local     privilege       escalation) (bsc#1269056).
    - CVE-2026-53800: Sender --remove-source-files unlink follows a parent-component symlink race -> arbitrary     file deletion       outside the source tree (bsc#1269057).
    - CVE-2026-53801: Sender/daemon directory-scan enumeration escapes the transfer root / module -> out-of-     tree disclosure       (bsc#1269058).
    - CVE-2026-53802: Arbitrary file read / transfer-shaping via symlinked operator-supplied input files     (bsc#1269039).
    - CVE-2026-53803: Arbitrary file write / privilege escalation via symlinked operator-supplied output paths       (bsc#1269040).
    - CVE-2026-70452: `hosts deny` fails OPEN when a configured hostname cannot be resolved, admitting the     host it was meant       to block (bsc#1273441).
    - CVE-2026-70453: Quadratic CPU exhaustion in hash_search() from a crafted equal-weak-checksum chain     (bsc#1273440).
    - CVE-2026-70454: rsync-ssl establishes an unauthenticated TLS connection (bsc#1273439).
    - CVE-2026-70455: Peer-controlled Zstandard worker exhaustion on an rsync daemon (bsc#1273438).
    - CVE-2026-70456: Remote out-of-bounds heap write in read_args() when the argument count lands exactly on     maxargs       (bsc#1273437).
    - CVE-2026-70457: Attacker-chosen-offset write in parse_size_arg() error formatting (bsc#1273436).
    - CVE-2026-70458: Out-of-bounds write from a FLAG_HLINKED file entry accepted without -H (bsc#1273435).
    - CVE-2026-70459: Per-connection daemon child crash from a crafted first incremental file list with a non-     directory       transfer root (bsc#1273434).
    - CVE-2026-70460: Daemon module-root escape through a peer-supplied --partial-dir / --backup-dir resolving     via an in-       module symlink (bsc#1273433).
    - CVE-2026-70461: Peer-driven one-byte heap out-of-bounds write in add_implied_include() (bsc#1273432).
    - CVE-2026-70462: Peer-supplied MSG_IO_TIMEOUT defeats the client's own I/O timeout (bsc#1273431).
    - CVE-2026-70463: 'auth users' ignores documented comma-only parsing, silently skipping a deny/read-only     rule       (bsc#1273430).
    - CVE-2026-70464: Unauthenticated pre-transfer handshake DoS locks out an rsync daemon module     (bsc#1273429).

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 AlmaLinux 9.2 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare ALMALINUX9.2:CLSA-2026:1789737518 advisory.

  - rsync before 3.5.0 contains a path traversal vulnerability that allows a malicious sender to write files     outside the intended destination directory tree by crafting relative paths with symlink components in
    --relative mode. The make_path() function follows symlinks pointing outside the destination tree while     creating intermediate directories without verifying that created paths remain within the destination     boundary, enabling arbitrary file writes on the receiver's filesystem. (CVE-2026-53785)

  - rsync before 3.5.0 contains multiple command and argument injection vulnerabilities that allow attackers     to execute arbitrary commands by supplying malicious input through several code paths, including the     RSYNC_CONNECT_PROG environment variable, daemon hooks, the rsync-ssl wrapper, and remote-shell command     newline injection. Attackers can inject shell metacharacters or newline characters into unsanitized user-     supplied values such as hostnames and hostspecs to execute arbitrary commands under the privileges of the     rsync process or the invoking user. (CVE-2026-53790)

  - rsync before 3.5.0 contains a logic error in --max-alloc handling that allows a sender or configuration     setting --max-alloc=0 to disable allocation sanity checks entirely rather than enforcing a zero-byte cap.
    Attackers can exploit this flaw to cause the receiver to attempt unbounded memory allocations for file     list and data structures, potentially exhausting available memory and causing a denial of service.
    (CVE-2026-53794)

  - rsync before 3.5.0 contains an algorithmic complexity vulnerability in the hash_search() function that     allows a remote attacker to cause a denial of service by delivering a carefully constructed file list. A     sender can exploit the quadratic-time worst-case behavior in hash lookups to exhaust receiver CPU     resources with a modest number of crafted entries, causing a sustained denial of service. (CVE-2026-70453)

  - rsync 3.0.1 before 3.5.0 contains an out-of-bounds write vulnerability in the read_args() function that     allows a malicious sender to corrupt adjacent heap memory by sending a crafted argument list. When the     argument count causes the argv allocation to be exactly full, the trailing NULL terminator is written one     slot beyond the allocation boundary, corrupting adjacent heap memory. (CVE-2026-70456)

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

The CentOS Linux 7 host has a package installed that is affected by multiple vulnerabilities as referenced in the TuxCare CENTOS7:CLSA-2026:1789749013 advisory.

  - rsync before 3.5.0 contains multiple command and argument injection vulnerabilities that allow attackers     to execute arbitrary commands by supplying malicious input through several code paths, including the     RSYNC_CONNECT_PROG environment variable, daemon hooks, the rsync-ssl wrapper, and remote-shell command     newline injection. Attackers can inject shell metacharacters or newline characters into unsanitized user-     supplied values such as hostnames and hostspecs to execute arbitrary commands under the privileges of the     rsync process or the invoking user. (CVE-2026-53790)

  - rsync before 3.5.0 contains a path confinement bypass vulnerability that allows remote clients to escape     the intended inner-module root confinement by constructing paths that resolve outside the chroot boundary     when the module root contains a /./ boundary marker. Attackers can exploit improper handling of the /./     notation or forge delta-basis transfers referencing xname paths that cross the /./ boundary to gain     unauthorized read or write access to files outside the module's subtree. (CVE-2026-53793)

  - rsync before 3.5.0 contains an algorithmic complexity vulnerability in the hash_search() function that     allows a remote attacker to cause a denial of service by delivering a carefully constructed file list. A     sender can exploit the quadratic-time worst-case behavior in hash lookups to exhaust receiver CPU     resources with a modest number of crafted entries, causing a sustained denial of service. (CVE-2026-70453)

  - rsync 3.0.0 before 3.5.0 contains an out-of-bounds write vulnerability that allows attackers to corrupt     memory by triggering HLINK_BUMP processing on file entries with the FLAG_HLINKED flag set while the hard-     link preservation option is inactive. Attackers can exploit the missing F_SUM field in the file_struct     layout to access memory past the end of the allocated structure, corrupting adjacent heap or stack data.
    (CVE-2026-70458)

  - rsync 3.1.0 before 3.5.0 contains a signed integer overflow vulnerability in the I/O timeout     implementation that allows attackers to permanently disable connection timeouts by injecting     MSG_IO_TIMEOUT messages carrying non-positive (zero or negative) values. Attackers can craft malicious     MSG_IO_TIMEOUT messages that cause the timeout variable to wrap to a non-positive value, preventing the     timeout check from firing and enabling idle or stalled connections to hold daemon slots indefinitely,     leading to resource exhaustion. (CVE-2026-70462)

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

The remote openSUSE 16 host has a package installed that is affected by multiple vulnerabilities as referenced in the openSUSE-SU-2026:21650-1 advisory.

    - CVE-2026-53783: rrsync restricted-directory escape (validation-vs-exec race + unsafe option allowlist)     (bsc#1269041).
    - CVE-2026-53784: Daemon module-root chdir escape under use chroot = no (bsc#1269042).
    - CVE-2026-53785: --relative implied-parent creation escapes the destination tree (bsc#1269043).
    - CVE-2026-53786: Daemon --filter merge file bypasses the module filter list (bsc#1269044).
    - CVE-2026-53788: Daemon name-converter accepts newline-bearing names into its line protocol     (bsc#1269046).
    - CVE-2026-53789: Malicious sender expands --delete scope by reclassifying an implied parent     (bsc#1269047).
    - CVE-2026-53790: Command / argument injection via unquoted peer- or host-controlled values (bsc#1269048).
    - CVE-2026-53791: PROXY-protocol mode lets a direct client spoof the daemon's source address     (bsc#1269049).
    - CVE-2026-53792: Receiver-supplied zero checksum block length drives sender matching negative     (bsc#1269050).
    - CVE-2026-53793: Chroot /./ inner-module escape via a parent-component symlink (bsc#1269051).
    - CVE-2026-53794: Remote peer disables the per-allocation sanity cap via --max-alloc=0 (bsc#1269052).
    - CVE-2026-53795: Receiver write escape via an absolute --temp-dir / --link-dest disabling rename/link     confinement       (bsc#1269053).
    - CVE-2026-53796: Non-daemon receiver destination-chdir symlink race (bsc#1269054).
    - CVE-2026-53797: Sender source-tree parent-component symlink race -> out-of-tree disclosure     (bsc#1269055).
    - CVE-2026-53798: Daemon name-converter empty response maps an unknown name to uid/gid 0 (bsc#1269045).
    - CVE-2026-53799: Receiver ACL/xattr application follows a symlink-race -> arbitrary ACL set     (bsc#1269056).
    - CVE-2026-53800: Sender --remove-source-files unlink follows a parent-component symlink race -> arbitrary     file deletion       outside the source tree (bsc#1269057).
    - CVE-2026-53801: Sender/daemon directory-scan enumeration escapes the transfer root / module -> out-of-     tree disclosure       (bsc#1269058).
    - CVE-2026-53802: Arbitrary file read / transfer-shaping via symlinked operator-supplied input files     (bsc#1269039).
    - CVE-2026-53803: Arbitrary file write / privilege escalation via symlinked operator-supplied output paths       (bsc#1269040).
    - CVE-2026-70452: `hosts deny` fails OPEN when a configured hostname cannot be resolved, admitting the     host it was meant       to block (bsc#1273441).
    - CVE-2026-70453: Quadratic CPU exhaustion in hash_search() from a crafted equal-weak-checksum chain     (bsc#1273440).
    - CVE-2026-70454: rsync-ssl establishes an unauthenticated TLS connection (bsc#1273439).
    - CVE-2026-70455: Peer-controlled Zstandard worker exhaustion on an rsync daemon (bsc#1273438).
    - CVE-2026-70456: Remote out-of-bounds heap write in read_args() when the argument count lands exactly on     maxargs       (bsc#1273437).
    - CVE-2026-70457: Attacker-chosen-offset write in parse_size_arg() error formatting (bsc#1273436).
    - CVE-2026-70458: Out-of-bounds write from a FLAG_HLINKED file entry accepted without -H (bsc#1273435).
    - CVE-2026-70459: Per-connection daemon child crash from a crafted first incremental file list with a non-     directory       transfer root (bsc#1273434).
    - CVE-2026-70460: Daemon module-root escape through a peer-supplied --partial-dir / --backup-dir resolving     via an in-       module symlink (bsc#1273433).
    - CVE-2026-70461: Peer-driven one-byte heap out-of-bounds write in add_implied_include() (bsc#1273432).
    - CVE-2026-70462: Peer-supplied MSG_IO_TIMEOUT defeats the client's own I/O timeout (bsc#1273431).
    - CVE-2026-70463: auth users ignores documented comma-only parsing, silently skipping a deny/read-only     rule       (bsc#1273430).
    - CVE-2026-70464: Unauthenticated pre-transfer handshake DoS locks out an rsync daemon module     (bsc#1273429).

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 Debian 12 host has a package installed that is affected by multiple vulnerabilities as referenced in the dla-4888 advisory.

    - -------------------------------------------------------------------------     Debian LTS Advisory DLA-4888-1                debian-lts@lists.debian.org     https://www.debian.org/lts/security/                     Arnaud Rebillout     November 09, 2026                             https://wiki.debian.org/LTS
    - -------------------------------------------------------------------------

    Package        : rsync     Version        : 3.5.0+ds1-0+deb12u1     CVE ID         : CVE-2026-53783 CVE-2026-53784 CVE-2026-53785 CVE-2026-53786                      CVE-2026-53788 CVE-2026-53789 CVE-2026-53790 CVE-2026-53791                      CVE-2026-53792 CVE-2026-53793 CVE-2026-53794 CVE-2026-53795                      CVE-2026-53796 CVE-2026-53797 CVE-2026-53798 CVE-2026-53799                      CVE-2026-53800 CVE-2026-53801 CVE-2026-53802 CVE-2026-53803                      CVE-2026-70452 CVE-2026-70453 CVE-2026-70454 CVE-2026-70455                      CVE-2026-70456 CVE-2026-70457 CVE-2026-70458 CVE-2026-70459                      CVE-2026-70460 CVE-2026-70461 CVE-2026-70462 CVE-2026-70463                      CVE-2026-70464 CVE-2026-119741     Debian Bug     : 1149604

    Several vulnerabilities were discovered in rsync, a fast, versatile,     remote (and local) file-copying tool, which could result in local     privilege escalation, bypass of intended access restrictions, information     disclosure, denial of service or the execution of arbitrary code.

    Details can be found at     https://download.samba.org/pub/rsync/NEWS#3.5.0

    The Debian LTS team decided to backport rsync 3.5.0, plus regressions     fixes from 3.5.1, rather than trying to backport all the patches one by     to one into rsync 3.2.7.

    The change is potentially disruptive, given that those security fixes     also come with some behavior changes. Make sure to read the NEWS entry     when the package is updated on your system, or refer to     https://lists.debian.org/debian-lts/2026/11/msg00035.html.

    For Debian 12 bookworm, these problems have been fixed in version     3.5.0+ds1-0+deb12u1.

    We recommend that you upgrade your rsync packages.

    For the detailed security status of rsync please refer to     its security tracker page at:
    https://security-tracker.debian.org/tracker/rsync

    Further information about Debian LTS security advisories, how to apply     these updates to your system and frequently asked questions can be     found at: https://wiki.debian.org/LTS

Tenable has extracted the preceding description block directly from the Debian 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
337988	SUSE SLES15 Security Update : rsync (SUSE-SU-2026:3634-1)	Nessus	SuSE Local Security Checks	2026/8/19	2026/9/1	critical
360544	AlmaLinux 9.2 [TuxCare] Security Update: rsync / rsync-daemon Multiple Vulnerabilities (ALMALINUX9.2:CLSA-2026:1789737518)	Nessus	Alma Linux Local Security Checks	2026/10/1	2026/10/2	critical
361436	CentOS Linux 7 [TuxCare] Security Update: rsync Multiple Vulnerabilities (CENTOS7:CLSA-2026:1789749013)	Nessus	CentOS Local Security Checks	2026/10/1	2026/10/2	critical
341163	openSUSE 16 Security Update : rsync (openSUSE-SU-2026:21650-1)	Nessus	SuSE Local Security Checks	2026/8/28	2026/9/16	critical
351050	Amazon Linux 2023 : rsync, rsync-daemon (ALAS2023-2026-3131)	Nessus	Amazon Linux Local Security Checks	2026/9/29	2026/9/29	critical
377615	Debian dla-4888 : rsync - security update	Nessus	Debian Local Security Checks	2026/11/9	2026/11/9	critical

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