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.
Published: 2026-07-21
Score: 5.9 Medium
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

No analysis available yet.

Remediation

Vendor Workaround

Disable the aes128-gcm@openssh.com and aes256-gcm@openssh.com ciphers.

Tracking

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Advisories

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History

Tue, 21 Jul 2026 15:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-1310
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Tue, 21 Jul 2026 14:00:00 +0000

Type Values Removed Values Added
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.
Title Libssh: libssh: integrity downgrade via openssl aes-gcm tag verification
First Time appeared Redhat
Redhat enterprise Linux
Redhat hummingbird
CPEs cpe:/a:redhat:hummingbird:1
cpe:/o:redhat:enterprise_linux:10
cpe:/o:redhat:enterprise_linux:8
cpe:/o:redhat:enterprise_linux:9
Vendors & Products Redhat
Redhat enterprise Linux
Redhat hummingbird
References
Metrics cvssV3_1

{'score': 5.9, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N'}

Subscriptions

Redhat Enterprise Linux Hummingbird
cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2026-07-21T14:06:22.692Z

Reserved: 2026-07-07T15:40:24.561Z

Link: CVE-2026-59847

cve-icon Vulnrichment

Updated: 2026-07-21T14:04:40.822Z

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses
  • CWE-1310

    Missing Ability to Patch ROM Code