Auth bypass in Cisco Broadworks

CVE-2026-76438

A vulnerability in the web-based management interface of Cisco BroadWorks CommPilot Application Software could allow an authenticated, remote attacker with low privileges to alter configurations on an affected device. This vulnerability is due to missing authorization checks. An attacker could exploit this vulnerability by sending a crafted HTTP request. A successful exploit could allow the attacker to alter configurations on select pages.

Vulnerability class: Broken Access Control

Published · last modified .

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.006 (46.5th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 47th percentile — 46.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-76438: held from 0.006 to 0.006.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-76438?
CVE-2026-76438 is a medium-severity vulnerability in Cisco Broadworks, classified under Incorrect Authorization. CVSS score: 6.5/10. Published 2026-09-16.
How severe is CVE-2026-76438?
Medium severity. CVSS v3 base score is 6.5 out of 10.