CVE-2026-76413
HIGHDescription
A vulnerability in Cisco Adaptive Security Device Manager (ASDM) single sign-on (SSO) handler for Cisco Secure FMC Software could allow an unauthenticated, remote attacker to log in as the Cisco ASDM administrator user. This vulnerability is due to improper management of the Cisco ASDM SSO token. An attacker could exploit this vulnerability by performing session token forgery techniques. A successful exploit could allow the attacker to log in as the administrator user and, by repeating this action, keep legitimate administrators locked out of the ASDM indefinitely.
How to fix
No published remediation has been found for this vulnerability's affected products yet.
Mitigation guidance may be in the linked vendor advisories in the References section below.
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CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
Exploit Intelligence
EPSS data unavailable for this CVE.
References
Related Vulnerabilities
Other CWE-1259 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2024-36111 | Medium | 6.3 | 8.4% | - | - |
| CVE-2022-23541 | Medium | 5.0 | 0.8% | - | Fix |
| CVE-2022-23551 | Medium | 5.3 | 0.7% | - | Fix |
| CVE-2024-36533 | Critical | 9.8 | 0.5% | - | - |
| CVE-2026-25700 | High | 7.2 | 0.4% | - | Fix |
| CVE-2025-50579 | Medium | 5.3 | 0.4% | - | - |
Common questions
How do I fix CVE-2026-76413?
No published fix for CVE-2026-76413 has been found yet. Check the linked vendor advisories for guidance as it becomes available.
How severe is CVE-2026-76413?
CVE-2026-76413 has a CVSS v3 base score of 8.2, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-09-18.