Buffer overflow in Watchguard Fireware Os
CVE-2025-14733
An Out-of-bounds Write vulnerability in WatchGuard Fireware OS may allow a remote unauthenticated attacker to execute arbitrary code. This vulnerability affects both the Mobile User VPN with IKEv2 and the Branch Office VPN using IKEv2 when…
Vulnerability class: Buffer Overflow
EPSS: 0.278 (96.5th percentile) — read the EPSS interpretation.
Affected products
- Watchguard Fireware Os — versions 11.10.2, 12.0, 12.5
Weakness classification (CWE)
CISA KEV (Known Exploited Vulnerabilities)
This CVE is on the CISA KEV catalog, added on . CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.
BOD 22-01 due date: .
Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Public proof-of-concept exploits
References
Frequently asked questions
- What is CVE-2025-14733?
- CVE-2025-14733 is a vulnerability in Watchguard Fireware Os, classified under Out-of-bounds Write. Published 2025-12-19.
- Is CVE-2025-14733 known to be exploited?
- Yes. CVE-2025-14733 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2025-12-19), indicating it is being actively exploited. 1 public proof-of-concept repositories are indexed.