CVE-2025-14733
9.8, critical Known exploited Used in ransomwareWatchGuard Firebox Out of Bounds Write Vulnerability
- CVSS
- 9.8, critical critical CVSS v3.1
- EPSS, next 30 days
- 27% higher than 97.9% of scored CVEs
- Exploitation
- Confirmed in the wild
- Published
- 19 Dec 202510 months ago
Known exploited
CISA added this to the Known Exploited Vulnerabilities Catalog on 19 Dec 2025 and links it to ransomware activity. US federal agencies had to remediate by 26 Dec 2025, a deadline that has passed.
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.
Description
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.
Details
- Vendor
- WatchGuard
- Product
- Fireware OS
- Weakness
- CWE-787 (opens in a new tab)
- Status
- Analyzed
- Updated
- 9 Sept 2026
- Assigner
- 5d1c2695-1a31-4499-88ae-e847036fd7e3
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
References 3
The kind is read from NVD's tags where present and from the shape of the URL otherwise, so treat it as a hint.
Other WatchGuard CVEs
Every WatchGuard CVE we holdSame vendor in what we hold, not a known link between the flaws.
- CVE-2025-9242 WatchGuard Firebox Out-of-Bounds Write Vulnerability KEV EPSS 92% 9.8, critical
- CVE-2022-26318 WatchGuard Firebox and XTM Appliances Arbitrary Code Execution KEV EPSS 78% 9.8, critical
- CVE-2022-23176 WatchGuard Firebox and XTM Privilege Escalation Vulnerability KEV EPSS 11% 8.8, high
- CVE-2026-13043 WatchGuard Endpoint Security Missing Authentication for Critical Function Vulnerability EPSS 0.1% 8.8, high
- CVE-2026-86131 WatchGuard Fireware OS Code Injection Vulnerability EPSS 0.4% 9.8, critical
- CVE-2026-13046 WatchGuard Fireware OS Deserialization of Untrusted Data Vulnerability EPSS 0.4% 7.2, high
- CVE-2026-18145 WatchGuard Fireware OS Stack-based Buffer Overflow Vulnerability EPSS 0.4% 7.2, high
- CVE-2026-86104 WatchGuard Fireware OS Uncontrolled Resource Consumption Vulnerability EPSS 0.4% 7.5, high
Beyond this page
Is CVE-2025-14733 in your network?
This page tells you how dangerous CVE-2025-14733 is out there. Whether it sits on one of your devices, only a scan of your own network can tell. That is what our systems do, every day, for the companies we protect.
CVE-2025-14733 is in the CISA catalogue of exploited vulnerabilities: attackers are already exploiting it.
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EXYS7600 OCELOT
Find it before attackers do
Ocelot scans your network on a schedule and reports every vulnerability it finds by its CVE identifier, with its CVSS score and how many of your hosts are affected. A finding like CVE-2025-14733 comes with the devices to patch.
Learn more about EXYS7600 OCELOT -
EXYS7950 KONDRA
Detect it if it's exploited
Until the patch is applied, Kondra monitors your network, events and endpoints in real time. It keeps an inventory of the software installed on every endpoint, and its anomaly detection rules flag what an attacker does once inside.
Learn more about EXYS7950 KONDRA
Assembled from the NVD 2.0 API, the CISA Known Exploited Vulnerabilities Catalog and FIRST EPSS. Scores are as of our last collection on 17 Oct 2026, not the live upstream state.