CVE-2026-13050: CWE-787 Out-of-bounds Write in WatchGuard Fireware OS
CVE-2026-13050 is an out-of-bounds write vulnerability in the WatchGuard Fireware OS networkd process. It allows an authenticated privileged user to execute arbitrary code by sending specially crafted requests to the Management Web UI. The vulnerability affects multiple versions of Fireware OS, including 11.8 through 11.12.4_Update1, 12.0 through 12.12, and 2025.1 through 2026.2. The CVSS 4.0 base score is 8.6, indicating high severity. No official patch or remediation guidance has been published yet.
AI Analysis
Technical Summary
This vulnerability in WatchGuard Fireware OS involves an out-of-bounds write in the networkd process, which handles requests to the Management Web UI. An authenticated user with high privileges can exploit this flaw to execute arbitrary code on the affected system. The issue impacts versions 11.8 up to and including 11.12.4_Update1, 12.0 up to and including 12.12, and 2025.1 up to and including 2026.2. The vulnerability has a high CVSS score of 8.6, reflecting its potential impact. As of the published date, no official fix or patch has been announced by WatchGuard, and no known exploits are reported in the wild.
Potential Impact
Successful exploitation allows an authenticated privileged user to execute arbitrary code on the affected Fireware OS device. This could lead to full compromise of the device, potentially impacting network security and management functions.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict access to the Management Web UI to trusted administrators only and monitor for suspicious activity. Avoid exposing the management interface to untrusted networks.
CVE-2026-13050: CWE-787 Out-of-bounds Write in WatchGuard Fireware OS
Description
CVE-2026-13050 is an out-of-bounds write vulnerability in the WatchGuard Fireware OS networkd process. It allows an authenticated privileged user to execute arbitrary code by sending specially crafted requests to the Management Web UI. The vulnerability affects multiple versions of Fireware OS, including 11.8 through 11.12.4_Update1, 12.0 through 12.12, and 2025.1 through 2026.2. The CVSS 4.0 base score is 8.6, indicating high severity. No official patch or remediation guidance has been published yet.
CVSS v4.0
Score 8.6high
Affected software
pkg:github/watchguard/fireware-osRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in WatchGuard Fireware OS involves an out-of-bounds write in the networkd process, which handles requests to the Management Web UI. An authenticated user with high privileges can exploit this flaw to execute arbitrary code on the affected system. The issue impacts versions 11.8 up to and including 11.12.4_Update1, 12.0 up to and including 12.12, and 2025.1 up to and including 2026.2. The vulnerability has a high CVSS score of 8.6, reflecting its potential impact. As of the published date, no official fix or patch has been announced by WatchGuard, and no known exploits are reported in the wild.
Potential Impact
Successful exploitation allows an authenticated privileged user to execute arbitrary code on the affected Fireware OS device. This could lead to full compromise of the device, potentially impacting network security and management functions.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict access to the Management Web UI to trusted administrators only and monitor for suspicious activity. Avoid exposing the management interface to untrusted networks.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- WatchGuard
- Date Reserved
- 2026-06-23T17:37:35.867Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a46f27f27e9c797194fff85
Added to database: 07/02/2026, 23:21:35 UTC
Last enriched: 07/02/2026, 23:38:01 UTC
Last updated: 07/03/2026, 03:32:47 UTC
Views: 6
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