CVE-2025-14733
WatchGuard — WatchGuard Firebox Out of Bounds Write Vulnerability
WatchGuard · CWE-787 — Out-of-bounds write · in CISA KEV since 2025-12-19
EVRS 85 of 100 Immediate
Out-of-Band / Urgent Remediation
Rank 435 of 2,954 tracked
Raised to the floor for a confirmed exploited vulnerability.
Why it scores 85
Evidence available: 6 of 7 signalsListed in the CISA KEV catalog, and associated with known ransomware campaigns.
- CISA KEVApplied
- RansomwareApplied
- Vendor exploitationDid not apply
- EPSSApplied
- Microsoft Exploitability IndexNot applicable
- Pre-patch disclosureNo data
- KEV recencyDid not apply
- CVSSApplied
The band answers “how soon”, not “how bad”. No data for: Pre-patch disclosure. Why some signals show no data
Fix
Patch or fixed version identifiedCISA required action
- Check for signs of potential compromise on all internet accessible instances after applying mitigations. For more information please see
- nvd.nist.gov/…/CVE-2025-14733
Fixed in
fireware: update to 12.5.15 or later | fireware: update to 12.11.6 or later | fireware: update to 2025.1.4 or later
Affected versions
- fireware
>= 11.10.2 < 12.5.15>= 11.10.2 < 12.11.6>= 2025.1 < 2025.1.4 - firebox t15
- firebox t35
- firebox m270
- firebox m290
- firebox m370
- firebox m390
- firebox m440
+31 more affected products; see the full list at NVD.
Remediation
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Fixed versions from NVD.
Evidence
Each value with its source| Measure | Value | Source |
|---|---|---|
| CVSS base scoreHow severe the flaw is in itself. It does not say how likely an attack is. | 9.3 | NVD |
| FIRST EPSSFIRST's estimate of the chance this is exploited in the next 30 days, and how that ranks against all CVEs. | 0.265 (98th pctl) | FIRST EPSS |
| Actively exploitedWhether a source of record has confirmed attacks using it in the wild. | Confirmed | CISA KEV |
| Ransomware campaign useWhether CISA has seen ransomware operators use it. | Known | CISA KEV |
| CISA remediation deadlineThe date US federal agencies must have fixed or mitigated it. | 2025-12-26 · CISA federal deadline · Overdue by 10 months | CISA KEV |
| Public exploit moduleA module existing is not the same as active exploitation. | None known | Metasploit |
| EUVD cross-referenceENISA's record: CVSS 9.3 (v4.0), assigned by WatchGuard. | Listed | ENISA EUVD |
Description
NVDAn 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 the Firebox was previously configured with the mobile user VPN with IKEv2 or a branch office VPN using IKEv2 to a dynamic gateway peer, and both of those configurations have since been deleted, that Firebox may still be vulnerable if a branch office VPN to a static gateway peer is still configured.
What CISA says to do