# CVE-2026-59847

## Summary

- **CVE ID:** CVE-2026-59847
- **Severity:** MEDIUM
- **CVSS Score:** 5.9 (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N)
- **CWE:** CWE-253
- **Published:** Jul 21, 2026
- **Last Modified:** Sep 1, 2026

## 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.

## Affected Products

- Red Hat — Red Hat Hardened Images (0.12.1-4.hum1)
- Red Hat — Red Hat Enterprise Linux 10 (0:0.12.0-3.el10_2)
- Red Hat — Red Hat Enterprise Linux 8 (0:0.9.6-17.el8_10)
- Red Hat — Red Hat Enterprise Linux 9 (0:0.10.4-19.el9_8)

## References

- [CNA](https://access.redhat.com/security/cve/CVE-2026-59847)
- [CNA](https://bugzilla.redhat.com/show_bug.cgi?id=2498180)
- [CNA](https://access.redhat.com/errata/RHSA-2026:42922)
- [CNA](https://access.redhat.com/errata/RHSA-2026:55855)
- [CNA](https://access.redhat.com/errata/RHSA-2026:62218)
- [CNA](https://access.redhat.com/errata/RHSA-2026:62217)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.33%
- **EPSS Percentile:** 26.2

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._