VulnerabilityAnalyzed
CVE-2026-12725
A heap-based buffer overflow was found in dnsmasq.
MEDIUM 5.9EPSS 0.53%
Does this matter?
Lower severity and a low EPSS score (0.53%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 5.9 MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.53% probability · 43th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-122
- Affected
- redhat/openshift container platform · redhat/enterprise linux · thekelleys/dnsmasq
- Source
- secalert@redhat.com
References
- https://access.redhat.com/security/cve/CVE-2026-12725Mitigation, Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2490763Issue Tracking, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.