Is CVE-2026-12725 actively exploited?

No active exploitation of CVE-2026-12725 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-12725 be exploited remotely?

Yes. CVE-2026-12725 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-12725?

CVE-2026-12725 has a CVSS score of 5.9 (MEDIUM).

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MEDIUM

CVE-2026-12725

CWE-122Published: June 22, 2026· Updated: Jun 22, 2026

5.9

CVSS v3.1

EPSS:0.41%probability of exploitation in 30 daysPercentile:32.2th

Official 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.

NVD Source

Technical Analysis

CVE-2026-12725 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 5.9.