CVE-2026-20343
CVE CVE-2026-20343EUVD EUVD-2026-81126Published 2026-09-16T20:12:19.000ZLast changed 2026-09-18T14:46:28.000ZCVSS 7.5
What the advisory describes
A vulnerability in a critical API for Cisco Secure FMC Software could allow an unauthenticated, remote attacker to download sensitive files and use unbounded disk space. This vulnerability exists because a critical API lacks authentication. An attacker could exploit this vulnerability by repeatedly invoking the API. A successful exploit could allow the attacker to download sensitive files that should be restricted and consume disk space so the device could become unresponsive, causing a DoS condition.
Source: EUVD (ENISA), in the words of the advisory.
Products the advisory names
These come from the advisory itself, not from any check we performed.
- Cisco — Cisco Secure Firewall Management Center (FMC) 7.6.0; 7.4.4; 7.4.2.2; 10.0.1; 7.7.0; 7.6.4; 7.4.6; 7.4.0; 10.0.0; 7.6.2; 7.7.11; 7.7.10.1; 7.3.1.2; 7.4.1; 7.4.2.1; 7.4.3; 7.3.1.1; 7.6.2.1; 7.7.10; 7.4.2.4; 7.4.1.1; 7.4.2.3; 7.4.2; 7.6.3; 7.4.7; 7.6.5; 7.7.12; 7.3.0; 7.3.1; 7.6.1; 7.4.5
The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.
Carried in the product catalogue
An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.
- Cisco — Secure Firewall Management Center (FMC)
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