CVE-2026-12725
Last modified
CVE-2026-12725 is a medium-severity vulnerability rated 5.9/10 on the CVSS scale. A heap-based buffer overflow was found in dnsmasq. When DNSSEC validation and query logging are both enabled, logging of DS or DNSKEY replies containing unsupported algorithm or digest types can cause dnsmasq to write past the end of an internal logging buffer. EPSS estimates a 0.41% chance of exploitation in the next 30 days.
Description
A heap-based buffer overflow was found in dnsmasq. When DNSSEC validation and query logging are both enabled, logging of DS or DNSKEY replies containing unsupported algorithm or digest types can cause dnsmasq to write past the end of an internal logging buffer. A remote attacker able to supply such a DNS response may crash the dnsmasq process, resulting in denial of service.
Metrics
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Redhat | Openshift Container Platform | >= 4.0, <= 4.22.1 |
| Redhat | Enterprise Linux | 8.0 |
| Redhat | Enterprise Linux | 9.0 |
| Redhat | Enterprise Linux | 10.0 |
| Thekelleys | Dnsmasq | < 2.93 |
References
- https://access.redhat.com/security/cve/CVE-2026-12725Mitigation, Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2490763Issue Tracking, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-12725?
How severe is CVE-2026-12725?
How do I fix CVE-2026-12725?
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-2026-1272IBM Guardium Data Protection 12.0, 12.1, and 12.2 is vulnera…4.3
- CVE-2026-12720The Kirki WordPress plugin before 6.0.13 does not restrict …7.5
- CVE-2026-12721The Kirki WordPress plugin before 6.0.13 does not properly …8.6
- CVE-2026-12722Missing authentication for critical function vulnerability i…8.2
- CVE-2026-12723The Kirki WordPress plugin before 6.0.12 does not perform a…5.3
- CVE-2026-12724The Kirki WordPress plugin before 6.0.12 does not sanitise …4.3
- CVE-2026-12726A flaw was found in the AWX GitHub webhook integration. When…6.3
- CVE-2026-12729The weDocs: AI Powered Knowledge Base, Docs, Documentation, …4.3
- CVE-2026-1273The Post Grid Gutenberg Blocks for News, Magazines, Blog Web…7.2
- CVE-2026-12730IBM Business Automation Workflow containers and traditional …3.8
- CVE-2026-12731The weDocs: AI Powered Knowledge Base, Docs, Documentation, …6.4
- CVE-2026-12732The LearnPress plugin for WordPress is vulnerable to Stored …6.4
Are you affected by CVE-2026-12725?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST