SB2026081931 - Anolis OS update for libssh

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Main Vulnerability Database SB2026081931

SB2026081931 - Anolis OS update for libssh

Published: August 19, 2026

Security Bulletin ID SB2026081931
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Improper validation of integrity check value (CVE-ID: CVE-2026-59847)

CWE-ID: CWE-354 - Improper Validation of Integrity Check Value

CVSSv4: 8.3 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to modify plaintext transmitted over the connection without being detected.

The vulnerability exists due to improper integrity check in the OpenSSL AES-GCM backend when processing encrypted SSH traffic. A remote attacker can flip bits in packets in transit to modify plaintext transmitted over the connection without being detected.

Only OpenSSL-based server and client configurations using the affected AES-GCM ciphers are vulnerable. Successful exploitation requires knowledge of the expected plaintext format of the packets.


Remediation

Install update from vendor's website.

References