Fireware OS Stack Buffer Overflow in VPN Network Access Enforcement Allows Unprivileged Code Execution
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 2026.4, 12.12.4
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
The affected software is Fireware OS, the operating system used on WatchGuard firewall appliances, specifically its VPN Network Access Enforcement component. An authenticated mobile VPN user could send a specially crafted request to crash the device, causing a denial of service, and could potentially run malicious code with limited (unprivileged) permissions.
Summarized by anthropic/claude-haiku-5.5. Verify details against the original sources.
Read the original description
A stack-based buffer overflow vulnerability in Fireware OS's VPN Network Access Enforcement process allows an authenticated mobile VPN user to create a denial of service condition and potentially execute arbitrary code as an unprivileged process by sending a specially crafted request.
Timeline
- CVE published
- First seen by cve.now
Affected versions
- WatchGuard Fireware OS
From 2025.1 · fixed in 2026.4; From 12.9 · fixed in 12.12.4