Cisco Secure Firewall Management Center · Kwetsbaarheden Verholpen
Affects Nationaal Cyber Security Centrum CiscoSource GCVE Database
Exploited in the wild · KEV due 12 Sep 2026 · public exploit available (Metasploit) · 88% EPSS : apply the vendor's fix or mitigations to Nationaal Cyber Security Centrum Cisco now.
Data as of 28 Oct 2026, 05:11 UTC
- KEV deadline
- US federal agencies must patch by this date; a sensible deadline for everyone else. Other KEV due dates
- EPSS
- 88.4% chance of exploitation in 30 days – higher than 99% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:HExploitation evidence
t = 0 is the CVE’s publication on cve.org
Disclosed: evidence found.
CVE published 4 Mar 2026
Detectable: evidence found.
nuclei template: Cisco Secure Firewall Management Center - Authentication Bypass
Weaponised: evidence found.
Exploited in the wildExploited: evidence found.
Listed in CISA KEV 189 days after disclosure
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
Timeline
CVE ID reserved
by Cisco Systems, Inc.
, 147 days before disclosure
CVE published
on cve.org
, t = 0
In Threat Radar
record ingested
, 16 minutes after disclosure
Added to CISA KEV (opens in a new tab)
exploitation confirmed
, 189 days after disclosure
KEV remediation due
US federal deadline
, 192 days after disclosure
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), CISA KEV (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
- sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-onprem-fmc-authbypass-5JPp45V2 (opens in a new tab)
- cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk (opens in a new tab)
- cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk (opens in a new tab)
- nvd.nist.gov/vuln/detail/CVE-2026-20079 (opens in a new tab)
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| CiscoCisco Secure Firewall Management Center (FMC) | Affected
| Fixed in– |
Description
Cisco heeft kwetsbaarheden verholpen in Cisco Secure Firewall Management Center.
References
- aws.amazon.com/de/blogs/security/amazon-threat-intelligence-teams-identify-interlock-ransomware-campaign-targeting-enterprise-firewalls/ (opens in a new tab)
- blog.talosintelligence.com/fmc-ongoing-exploitation/ (opens in a new tab)
- sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fmc-rce-NKhnULJh (opens in a new tab)
- sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-onprem-fmc-authbypass-5JPp45V2 (opens in a new tab)