CVE-2025-147339.3CriticalCWE-787

CVE-2025-14733: WatchGuard Firebox iked Out of Bounds Write Vulnerability

WatchGuard · Fireware OS

Vendor fix available · Affected: WatchGuard Fireware OS · Exploitation: in CISA KEV since 19 Dec 2025

Known ransomware use

Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.

ExploitationIn CISA KEV

In CISA KEVCISA KEV catalogue19 Dec 2025
Exploited (reported): not seen
Scanning observed: not seen
Proof of concept public: not seen
Not established: not seen

29.4%probability of exploitation in the next 30 days

98th percentile

050100

Higher than 98% of scored CVEs

9.3CriticalCVSS 4.0

LowMediumHighCrit.

DescriptionCVE.org

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 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.

Affected products3

From the CVE record. A product or version that is not listed is unknown, not unaffected.

WatchGuard · Fireware OSfrom 2025.1 before 2025.1.4; from 12.0 before 12.11.6; from 11.10.2 up to and including 11.12.4+541730
WatchGuard · Fireware OSfrom 12.0 before 12.3.1+728352
WatchGuard · Fireware OSfrom 12.0 before 12.5.15

On the Atlas

Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.

Open the Atlas

Exploitation: Exploited in the wild. Listed in the CISA Known Exploited Vulnerabilities catalogue.
CISA KEV: Listed since 19 Dec 2025 · known ransomware use · catalogue entry
Public check: No public nuclei template
Weakness: Out-of-bounds Write · Memory Corruption
Vendor: WatchGuard
Published: December 2025
Band: Exploited in the wild, December 2025

What changed

5 Nov
CISA’s KEV entry now notes known ransomware use CISA
19 Dec 2025
CISA added it to the KEV catalogue CISA

CoverageNo articles yet

No CyberSIXT article names CVE-2025-14733 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.