What is CVE-2026-20034?

CVE-2026-20034 is a high-severity vulnerability in Cisco Unity Connection, classified under Path Traversal: '.../...//'. CVSS score: 8.8/10. Published 2026-05-06.

How severe is CVE-2026-20034?

High severity. CVSS v3 base score is 8.8 out of 10.

Path Traversal in Cisco Unity Connection

CVE-2026-20034

A vulnerability in the web-based management interface of Cisco Unity Connection could allow an authenticated, remote attacker to execute arbitrary code on an affected device. This vulnerability is due to insufficient validation of user-…

EPSS: 0.004 (63.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Cisco Unity Connection — versions 12.5(1), 12.5(1)SU1, 12.5(1)SU2

Weakness classification (CWE)

CWE-35 — Path Traversal: '.../...//'

References

cisco-sa-unity-rce-ssrf-hENhuASy

Frequently asked questions

What is CVE-2026-20034?: CVE-2026-20034 is a high-severity vulnerability in Cisco Unity Connection, classified under Path Traversal: '.../...//'. CVSS score: 8.8/10. Published 2026-05-06.
How severe is CVE-2026-20034?: High severity. CVSS v3 base score is 8.8 out of 10.