Cisco Secure Firewall Management Center Authentication Bypass Remote Code Execution Vulnerability
- Severity
- Critical10CVSS 3.1, Critical
- Known exploited
- Known exploitedFederal remediation due date: 12 Sept 2026
- Exploit prediction
- 88%
- Published
- 4 Mar 2026Updated 16 Sept 2026 · Last verified 28 Sept 2026
Known remediation
Fixed releases per branch, as the vendor states them. Patcharo never infers a fix.
Cisco Secure Firewall Management Center (FMC)
Vendor advisory- 10.0No fix published
- 7.7No fix published
- 7.6No fix published
- 7.4No fix published
- 7.3No fix published
- 7.2No fix published
- 7.1No fix published
- 7.0No fix published
Description
Title, description and vendor guidance are quoted from the source records.
A vulnerability in the web interface of Cisco Secure Firewall Management Center (FMC) Software could allow an unauthenticated, remote attacker to bypass authentication and execute script files on an affected device to obtain root access to the underlying operating system. This vulnerability is due to an improper system process that is created at boot time. An attacker could exploit this vulnerability by sending crafted HTTP requests to an affected device. A successful exploit could allow the attacker to execute a variety of scripts and commands that allow root access to the device.
Weakness: CWE-288
Known exploited
Added to CISA KEV on 9 Sept 2026
Federal remediation due date: 12 Sept 2026
Required action: 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.
Exploit prediction
88% probability of exploitation in the next 30 days (percentile 100%).
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
What the source states, per branch
Versions matched by Patcharo
Cisco Secure Firewall Management Center (FMC)Source: Cisco (CVE record)
| Branch | Affected | Fixed in |
|---|---|---|
| 10.0 | Exact releases: 10.0, 10.0.1 | |
| 7.7 | Exact releases: 7.7, 7.7.10, 7.7.10.1, 7.7.11, 7.7.12 | |
| 7.6 | Exact releases: 7.6, 7.6.1, 7.6.2, 7.6.2.1, 7.6.3, 7.6.4, 7.6.5 | |
| 7.4 | Exact releases: 7.4, 7.4.1, 7.4.1.1, 7.4.2, 7.4.2.1, 7.4.2.2, 7.4.2.3, 7.4.2.4, 7.4.3, 7.4.4, 7.4.5, 7.4.6, 7.4.7 | |
| 7.3 | Exact releases: 7.3, 7.3.1, 7.3.1.1, 7.3.1.2 | |
| 7.2 | Exact releases: 7.2, 7.2.0.1, 7.2.1, 7.2.2, 7.2.3, 7.2.3.1, 7.2.4, 7.2.4.1, 7.2.5, 7.2.5.1, 7.2.6, 7.2.7, 7.2.5.2, 7.2.8, 7.2.8.1, 7.2.9, 7.2.10, 7.2.10.1, 7.2.10.2, 7.2.11 | |
| 7.1 | Exact releases: 7.1, 7.1.0.1, 7.1.0.2, 7.1.0.3 | |
| 7.0 | Exact releases: 7.0, 7.0.0.1, 7.0.1, 7.0.1.1, 7.0.2, 7.0.2.1, 7.0.3, 7.0.4, 7.0.5, 7.0.6, 7.0.6.1, 7.0.6.2, 7.0.6.3, 7.0.7, 7.0.8, 7.0.8.1, 7.0.9 |
Versions not listed are not assessed (shown as Unknown).
References
Provenance
Every fact on this page comes from the sources below. Nothing is written by an AI.
- Cisco (CVE record)
- Cisco (CVE record) · 28 Sept 2026 at 20:05 UTC · Parser patcharo-cve5/1.1.0
- CISA Known Exploited Vulnerabilities
- CISA Known Exploited Vulnerabilities · 28 Sept 2026 at 20:05 UTC · Parser patcharo-kev/1.0.0
- NVD
- NVD · 27 Sept 2026 at 23:44 UTC · Parser patcharo-nvd/1.0.0
- FIRST EPSS
- FIRST EPSS · 27 Sept 2026 at 23:46 UTC · Parser patcharo-epss/1.0.0
Last verified: 28 Sept 2026 at 20:05 UTC