CVE-2026-59847

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.

CVSS v3 5.9 MEDIUM

5.9^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.2 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://access.redhat.com/errata/RHSA-2026:42922	Third Party Advisory
https://access.redhat.com/errata/RHSA-2026:55855	Third Party Advisory
https://access.redhat.com/errata/RHSA-2026:62217	Third Party Advisory
https://access.redhat.com/errata/RHSA-2026:62218	Third Party Advisory
https://access.redhat.com/security/cve/CVE-2026-59847	Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2498180	Issue Tracking Third Party Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:libssh:libssh::::::::
	cpe:2.3:a:libssh:libssh:0.12.0:::::::*

Configuration 2 (hide)

OR	cpe:2.3:a:redhat:hardened_images:-:::::::*
	cpe:2.3:o:redhat:enterprise_linux:8.0:::::::*
	cpe:2.3:o:redhat:enterprise_linux:9.0:::::::*
	cpe:2.3:o:redhat:enterprise_linux:10.0:::::::*

History

No history.

Information

Published : 2026-07-21 14:16

Updated : 2026-09-04 19:23

NVD link : CVE-2026-59847

Mitre link : CVE-2026-59847

CVE.ORG link : CVE-2026-59847

JSON object : View

Products Affected

redhat

enterprise_linux
hardened_images

libssh

libssh

CWE

CWE-253

Incorrect Check of Function Return Value

CWE-1310

Missing Ability to Patch ROM Code

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