Vulnerability in Cisco Firewall Management Center (July 30, 2026)
Actively exploited. At least one CVE in this advisory is listed in the CISA Known Exploited Vulnerabilities catalog — exploitation has been observed in the wild. Treat remediation as urgent.
A vulnerability has been discovered in Cisco Firewall Management Center. It allows an attacker to cause a breach of data confidentiality and a bypass of security policy. Cisco indicates that the vulnerability CVE-2026-20316 is actively exploited.
CSIRTS triage
- What
- A vulnerability allows an attacker to breach data confidentiality and bypass security policy.
- Who is affected
- Users of Cisco Firewall Management Center are affected.
- Urgency
- Remediation is urgent due to active exploitation of the vulnerability.
- Action
- Users should apply necessary updates as they become available.
AI-assisted analysis generated from the source advisory — verify against the original.
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Details
Original advisory: https://www.cert.ssi.gouv.fr/avis/CERTFR-2026-AVI-0950/
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Exploitation confirmedCVE-2026-20316Already exploited in the wild (CISA KEV) — the prediction phase is over. Patch now. Riskier than 53% of all scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-20316 | coverage & exploitation status | NVD · CVE.org |
Same CVEs, other sources
How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.
- highexploitedCisco Secure Firewall Management Center Software Static Credential Vulnerabilitycisco-psirt
- unknownexploitedCisco security advisory (AV26-757)cccs
- medium[NEW] [medium] Cisco Secure Firewall Management Center: Vulnerability allows information disclosurecert-bund
- unknownNCSC-2026-0271 [1.00] [M/H] Vulnerability fixed in Cisco Secure Firewall Management Centerncsc-nl
- unknownCisco Secure Firewall Management Center Software Information Disclosure Vulnerabilityhkcert
- mediumexploitedCVE-2026-20316: A vulnerability in the web interface of Cisco Secure Firewall Management Center (FMC) Software…nvd
- highexploitedCISA Adds One Known Exploited Vulnerability to Catalogcisa
- criticalexploitedCVE-2026-20316: Cisco Secure Firewall Management Center Use of Hard-coded Password Vulnerabilitycisa-kev
Recent advisories for Cisco Firewall Management
A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.
- highexploitedCisco Secure Firewall Management Center Software Static Credential Vulnerabilitycisco-psirt · 2026-07-31
- criticalCisco Secure Firewall Management Center Software Authentication Bypass Vulnerabilitycisco-psirt · 2026-07-31
- medium[NEW] [medium] Cisco Secure Firewall Management Center: Vulnerability allows information disclosurecert-bund · 2026-07-30
- unknownNCSC-2026-0271 [1.00] [M/H] Vulnerability fixed in Cisco Secure Firewall Management Centerncsc-nl · 2026-07-30
- unknownCisco Secure Firewall Management Center Software Information Disclosure Vulnerabilityhkcert · 2026-07-30
- mediumexploitedCVE-2026-20316: A vulnerability in the web interface of Cisco Secure Firewall Management Center (FMC) Software…nvd · 2026-07-29
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