Connect your agent
AdvisoriesCriticalCheck your lockfilePluginHow it worksPricing Connect your agent

CVE record · CVE-2026-76504

Cisco Catalyst SD-WAN Manager System Account Authorization Bypass Vulnerability

CVSS 9.8 CriticalCriticalIn CISA KEVEPSS 0.39 · 98th percentile

Critical, because:

  • In CISA’s KEV catalogue since 30 Sept 2026: it is known to be exploited.
  • CVSS score 9.8: 9.0 or more.
  • CVSS score 9.8 (7.0 or more) and EPSS 0.39 (0.1 or more): a high score and a real chance of exploitation in the next 30 days.

How we decide what’s critical

Published by the CVE Program (CNA: cisco) at 30 Sept 2026, 13:04 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
VendorProductVersions
Cisco Cisco Catalyst SD-WAN Manager
  • affected 20.1.12
  • affected 19.2.1
  • affected 18.4.4
  • affected 18.4.5
  • affected 20.1.1.1
  • affected 20.1.1
  • affected 19.3.0
  • affected 19.2.2
  • affected 19.2.099
  • affected 18.3.6
  • affected 18.3.7
  • affected 19.2.0
  • and 403 more
Other versions: unknown
Identifiers
CVE-2026-76504
CNA
cisco
Weakness (CWE)
CWE-177
Tags
Published
30 Sept 2026
Updated
2 Oct 2026

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

ScoreRatingCVSSVectorSource
9.8 Critical 3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CNA (cisco)
  • CISA KEV Listed since 30 Sept 2026: known to be exploited.
  • EPSS 0.39, the 98th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 30 Sept 2026. New records show when each source confirmed them.

Sources

References from the CNA

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.