CVE-2026-59847 | A flaw was found in libssh. Incorrect AES-GCM finalization c… | CVSS 5.9 MEDIUM

Description

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.

Metadata

CVE ID: CVE-2026-59847
State: PUBLISHED
Assigner: redhat
Reserved: 2026-07-07 15:40 UTC
Published: 2026-07-21 13:18 UTC
Last updated: 2026-07-21 14:06 UTC
Primary CWE: CWE-1310
CWE-1310 Missing Ability to Patch ROM Code
Vendor / Product: Red Hat / Red Hat Enterprise Linux 10
Sources: cve.org · NVD

Severity & Metrics

5.9 MEDIUM CVSS 3.1

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

SSVC — CISA Coordinator

Exploitation: none
Automatable: yes
Tech. Impact: partial

Affected products (4)

Vendor	Product	Platform	Versions
Red Hat	Red Hat Enterprise Linux 10	—	—
Red Hat	Red Hat Enterprise Linux 8	—	—
Red Hat	Red Hat Enterprise Linux 9	—	—
Red Hat	Red Hat Hardened Images	—	—

Weakness (CWE)

CWE	Source	Description
CWE-1310	adp	CWE-1310 Missing Ability to Patch ROM Code

CVSS scores (1)

Score	Severity	Version	Source	Vector
5.9	MEDIUM	3.1	cna	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

References (2)