CVE Vulnerabilities

CVE-2026-59847

Incorrect Check of Function Return Value

Published: Jul 21, 2026 | Modified: Aug 12, 2026
CVSS 3.x
7.5
HIGH
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CVSS 2.x
RedHat/V2
RedHat/V3
5.9 MODERATE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Ubuntu
MEDIUM
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A flaw was found in libssh. Incorrect AES-GCM finalization checks in builds using the OpenSSL backend can effectively remove integrity protection, allowing an in-path attacker to modify plaintext on the wire without detection.

Weakness

The product incorrectly checks a return value from a function, which prevents it from detecting errors or exceptional conditions.

Affected Software

NameVendorStart VersionEnd Version
LibsshLibssh- (including)- (including)
Hardened_imagesRedhat- (including)- (including)
Enterprise_linuxRedhat8.0 (including)8.0 (including)
Enterprise_linuxRedhat9.0 (including)9.0 (including)
Enterprise_linuxRedhat10.0 (including)10.0 (including)
Red Hat Hardened ImagesRedHatlibssh-main-0.12.1-4.hum1*

Potential Mitigations

References