On 2025-12-19, CISA added CVE-2025-14733 (WatchGuard Firebox) to its Known Exploited Vulnerabilities (KEV) catalog [2]. The vulnerability is listed in the catalog as "WatchGuard Firebox Out of Bounds Write Vulnerability" [2]. CISA requires applying mitigations in accordance with vendor instructions; see the full text below for specific requirements [2].
Backfill: this event became public on Dec 19, 2025 and we added it on Nov 10, 2026. It is not a new event.
CISA Adds WatchGuard Firebox Vulnerability CVE-2025-14733 to Known Exploited Vulnerabilities Catalog
1 min read
- Disclosed
- Dec 19, 2025
- Published
- Nov 10, 2026
- Last updated
- Nov 8, 2026
- CVSS basis
- Our assessment
- 29.4%, higher than 98% of CVEs
- Exploitation and patch status
- ExploitedKEV
- Attack vector
- Vulnerability status
- Actor type
- Motivation
On this page
30-second summary
What happened
Who is affected
Industries mainly affected: Government, Cross-industry
What to do nowOur advice
CISA requires applying mitigations in accordance with vendor instructions; see the full text for specific requirements [2].
Timeline
Technical details
CISA KEV Listing
On 2025-12-19, CISA added CVE-2025-14733 to the Known Exploited Vulnerabilities () catalog for WatchGuard Firebox [2].
Original Technical Description
WatchGuard Fireware OS iked process contains an out of bounds write vulnerability in the OS iked process. This vulnerability may allow a remote unauthenticated attacker to execute arbitrary code and affects both the mobile user with IKEv2 and the branch office VPN using IKEv2 when configured with a dynamic gateway peer. [2]
Official Requirements
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. [2]
Individual Vulnerability Record
The U.S. National Vulnerability Database (NVD) provides an independent vulnerability record and description for CVE-2025-14733 [1].
References
Official / primary3
- [1]
“An Out-of-bounds Write vulnerability in the WatchGuard Fireware OS iked process 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 configured with a dynamic gateway peer. If”
- [2]
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