CVE-2026-93857
Last modified
CVE-2026-93857 is a critical-severity vulnerability rated 9.2/10 on the CVSS scale. A stack-based buffer overflow vulnerability in Fireware OS's SIP proxy allows a remote, unauthenticated attacker to execute arbitrary code by sending a specially crafted request through a policy that uses the SIP proxy.. EPSS estimates a 0.47% chance of exploitation in the next 30 days.
Description
A stack-based buffer overflow vulnerability in Fireware OS's SIP proxy allows a remote, unauthenticated attacker to execute arbitrary code by sending a specially crafted request through a policy that uses the SIP proxy.
Metrics
Weakness Enumeration
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| WatchGuard | Fireware OS | >= 2025.1, < 2026.4; >= 12.0, < 12.12.4 |
| WatchGuard | Fireware OS | >= 12.0, < 12.5.22 |
References
Timeline
- Published
- Last Modified
- Status
- Awaiting Analysis
Frequently Asked Questions
What is CVE-2026-93857?
How severe is CVE-2026-93857?
How do I fix CVE-2026-93857?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-93851Mattermost versions 11.9.x <= 11.9.1, 11.8.x <= 11.8.5, 11.7…8
- CVE-2026-93852In OpenStack Blazar before 17.0.1, the V2 lease listing oper…7.1
- CVE-2026-93853Unverified ownership in Barman snapshot backup deletion allo…7.2
- CVE-2026-93854In OpenStack Blazar before 17.0.1, the V2 lease API does not…7.2
- CVE-2026-93855The SendPress Newsletters plugin for WordPress is vulnerable…7.5
- CVE-2026-93856In OpenStack Cinder through 29.0.0, cross-project informatio…4.3
- CVE-2026-93858In OpenStack Mistral through 23.0.0, the std.ssh_proxied act…8.7
- CVE-2026-9386A vulnerability was identified in Totolink A8000RU 7.1cu.643…9.8
- CVE-2026-93860In OpenStack Mistral through 23.0.0, the /v2/maintenance API…7.1
- CVE-2026-93861In OpenStack Mistral through 23.0.0, the workflow membership…6
- CVE-2026-93862An out-of-bounds read vulnerability in the FireCluster Sync …7.2
- CVE-2026-93864A link following vulnerability in WatchGuard Fireware OS’s f…7.1
Are you affected by CVE-2026-93857?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST