CVE-2026-12969
MEDIUM EPSS 16.2%
Published Jun 23, 20261w ago · Modified Jun 23, 20261w ago
5.3 CVSS 3.1
Published Jun 23, 2026 1w ago
Last Modified Jun 23, 2026 1w ago
Description
An out-of-bounds read vulnerability exists in dnsmasq's find_soa() function in src/rfc1035.c. When parsing NS section records, extract_name() is called with extrabytes=0, failing to validate that 10 additional bytes exist for fixed-length DNS record fields. A remote attacker controlling a DNS zone can exploit this via a crafted NXDOMAIN response to cause a 10-byte heap out-of-bounds read, potentially accessing stale data from prior transactions.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Low
Integrity None
Availability None
Threat Intelligence
EPSS Exploit Probability
16.2% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-125 Out-of-bounds Read Memory Safety
References 2
- access.redhat.com https://access.redhat.com/security/cve/CVE-2026-12969
- bugzilla.redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=2491663
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.