According to the versions of the libssh package installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities :

    A flaw was found in the libssh library. An out-of-bounds read can be triggered in the sftp_handle function     due to an incorrect comparison check that permits the function to access memory beyond the valid handle     list and to return an invalid pointer, which is used in further processing. This vulnerability allows an     authenticated remote attacker to potentially read unintended memory regions, exposing sensitive     information or affect service behavior.(CVE-2025-5318)

    There's a vulnerability in the libssh package where when a libssh consumer passes in an unexpectedly large     input buffer to ssh_get_fingerprint_hash() function. In such cases the bin_to_base64() function can     experience an integer overflow leading to a memory under allocation, when that happens it's possible that     the program perform out of bounds write leading to a heap corruption.
    This issue affects only 32-bits builds of libssh.(CVE-2025-4877)

    A vulnerability was found in libssh, where an uninitialized variable exists under certain conditions in     the privatekey_from_file() function. This flaw can be triggered if the file specified by the filename     doesn't exist and may lead to possible signing failures or heap corruption.(CVE-2025-4878)

    A flaw was found in libssh versions built with OpenSSL versions older than 3.0, specifically in the     ssh_kdf() function responsible for key derivation. Due to inconsistent interpretation of return values     where OpenSSL uses 0 to indicate failure and libssh uses 0 for successthe function may mistakenly     return a success status even when key derivation fails. This results in uninitialized cryptographic key     buffers being used in subsequent communication, potentially compromising SSH sessions' confidentiality,     integrity, and availability.(CVE-2025-5372)

    A flaw was found in libssh, a library that implements the SSH protocol. When calculating the session ID     during the key exchange (KEX) process, an allocation failure in cryptographic functions may lead to a NULL     pointer dereference. This issue can cause the client or server to crash.(CVE-2025-8114)

    A flaw was found in libssh's handling of key exchange (KEX) processes when a client repeatedly sends     incorrect KEX guesses. The library fails to free memory during these rekey operations, which can gradually     exhaust system memory. This issue can lead to crashes on the client side, particularly when using     libgcrypt, which impacts application stability and availability.(CVE-2025-8277)

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

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

According to the versions of the libssh package installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities :

    A flaw was found in libssh's handling of key exchange (KEX) processes when a client repeatedly sends     incorrect KEX guesses. The library fails to free memory during these rekey operations, which can gradually     exhaust system memory. This issue can lead to crashes on the client side, particularly when using     libgcrypt, which impacts application stability and availability.(CVE-2025-8277)

    A flaw was found in libssh versions built with OpenSSL versions older than 3.0, specifically in the     ssh_kdf() function responsible for key derivation. Due to inconsistent interpretation of return values     where OpenSSL uses 0 to indicate failure and libssh uses 0 for successthe function may mistakenly     return a success status even when key derivation fails. This results in uninitialized cryptographic key     buffers being used in subsequent communication, potentially compromising SSH sessions' confidentiality,     integrity, and availability.(CVE-2025-5372)

    A flaw was found in the libssh library. An out-of-bounds read can be triggered in the sftp_handle function     due to an incorrect comparison check that permits the function to access memory beyond the valid handle     list and to return an invalid pointer, which is used in further processing. This vulnerability allows an     authenticated remote attacker to potentially read unintended memory regions, exposing sensitive     information or affect service behavior.(CVE-2025-5318)

Tenable has extracted the preceding description block directly from the EulerOS Virtualization libssh 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 41 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2025-18e8506d3a advisory.

    New upstream release with security fixes for CVE-2025-4877, CVE-2025-4878, CVE-2025-5987, CVE-2025-5318,     CVE-2025-5351, CVE-2025-5372, CVE-2025-5449

    ----

    Automatic update for libssh-0.11.0-1.fc41.


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 SUSE Linux SLES12 host has a package installed that is affected by multiple vulnerabilities as referenced in the SUSE-SU-2025:02755-1 advisory.

    - CVE-2025-4877: Fixed write beyond bounds in binary to base64 conversion functions (bsc#1245309).
    - CVE-2025-4878: Fixed use of uninitialized variable in privatekey_from_file() (bsc#1245310).
    - CVE-2025-5318: Fixed likely read beyond bounds in sftp server handle management (bsc#1245311).

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.

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

    There's a vulnerability in the libssh package where when a libssh consumer passes in an unexpectedly large     input buffer to ssh_get_fingerprint_hash() function. In such cases the bin_to_base64() function can     experience an integer overflow leading to a memory under allocation, when that happens it's possible that     the program perform out of bounds write leading to a heap corruption.
    This issue affects only 32-bits builds of libssh.(CVE-2025-4877)

    A vulnerability was found in libssh, where an uninitialized variable exists under certain conditions in     the privatekey_from_file() function. This flaw can be triggered if the file specified by the filename     doesn't exist and may lead to possible signing failures or heap corruption.(CVE-2025-4878)

    A flaw was found in libssh, a library that implements the SSH protocol. When calculating the session ID     during the key exchange (KEX) process, an allocation failure in cryptographic functions may lead to a NULL     pointer dereference. This issue can cause the client or server to crash.(CVE-2025-8114)

    A flaw was found in libssh's handling of key exchange (KEX) processes when a client repeatedly sends     incorrect KEX guesses. The library fails to free memory during these rekey operations, which can gradually     exhaust system memory. This issue can lead to crashes on the client side, particularly when using     libgcrypt, which impacts application stability and availability.(CVE-2025-8277)

Tenable has extracted the preceding description block directly from the EulerOS libssh 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
297301	EulerOS Virtualization 2.10.1 : libssh (EulerOS-SA-2026-1127)	Nessus	Huawei Local Security Checks	2026/1/31	2026/2/24	high
297307	EulerOS Virtualization 2.10.0 : libssh (EulerOS-SA-2026-1178)	Nessus	Huawei Local Security Checks	2026/1/31	2026/2/24	high
302578	EulerOS Virtualization 2.12.0 : libssh (EulerOS-SA-2026-1496)	Nessus	Huawei Local Security Checks	2026/3/16	2026/3/16	high
302590	EulerOS Virtualization 2.12.1 : libssh (EulerOS-SA-2026-1439)	Nessus	Huawei Local Security Checks	2026/3/16	2026/3/16	high
244363	Fedora 41 : libssh (2025-18e8506d3a)	Nessus	Fedora Local Security Checks	2025/8/6	2026/1/21	medium
249216	SUSE SLES12 Security Update : libssh (SUSE-SU-2025:02755-1)	Nessus	SuSE Local Security Checks	2025/8/13	2025/8/13	medium
278489	EulerOS 2.0 SP11 : libssh (EulerOS-SA-2025-2465)	Nessus	Huawei Local Security Checks	2025/12/11	2026/2/24	medium

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