CVE-2026-12725

MEDIUMPre-NVD 5.95.9—
EchelonGraph scoreHIGH confidence

Score 5.9 from GitHub Security Advisory published 2026-06-22. a secondary CVSS source baseline 5.9; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
5.9
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 5.9Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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 v3
5.9
EG Score
5.9(high)
EPSS
32.5%
KEV
Not listed

Published

June 22, 2026

Last Modified

June 22, 2026

Advisory Details (2)

Auto-updated Jun 22, 2026
Patch available. Sources: redhat.
redhat

2490763 – (CVE-2026-12725) CVE-2026-12725 dnsmasq: dnsmasq: heap buffer overflow in log_query() when logging unsupported DS/DNSKEY replies

https://bugzilla.redhat.com/show_bug.cgi?id=2490763
redhat Patch Available

cve-details

https://access.redhat.com/security/cve/CVE-2026-12725

Vendor Advisories for CVE-2026-12725(2)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 29× in last 7d / 53× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-07 01:39 UTCEG score recompute
  2. 2026-07-07 01:39 UTCVendor advisory
  3. 2026-07-07 01:39 UTCGHSA enrichment
  4. 2026-07-06 16:27 UTCEPSS rescore
  5. 2026-07-06 02:23 UTCEPSS rescore
  6. 2026-07-06 01:08 UTCEG score recompute
  7. 2026-07-06 01:08 UTCVendor advisory
  8. 2026-07-06 01:08 UTCGHSA enrichment
  9. 2026-07-05 02:30 UTCEPSS rescore
  10. 2026-07-05 02:30 UTCEPSS rescore
  11. 2026-07-05 00:37 UTCEG score recompute
  12. 2026-07-05 00:37 UTCVendor advisory
  13. 2026-07-05 00:37 UTCGHSA enrichment
  14. 2026-07-04 06:31 UTCEPSS rescore
  15. 2026-07-04 00:06 UTCEG score recompute
  16. 2026-07-04 00:06 UTCVendor advisory
  17. 2026-07-04 00:06 UTCGHSA enrichment
  18. 2026-07-02 23:32 UTCEG score recompute
  19. 2026-07-02 23:32 UTCVendor advisory
  20. 2026-07-02 23:32 UTCGHSA enrichment
  21. 2026-07-01 23:00 UTCEG score recompute
  22. 2026-07-01 23:00 UTCVendor advisory
  23. 2026-07-01 23:00 UTCGHSA enrichment
  24. 2026-07-01 15:06 UTCEPSS rescore
  25. 2026-07-01 15:06 UTCEPSS rescore
Show 28 more
  1. 2026-06-30 23:22 UTCEPSS rescore
  2. 2026-06-30 22:29 UTCEG score recompute
  3. 2026-06-30 22:29 UTCVendor advisory
  4. 2026-06-30 22:29 UTCGHSA enrichment
  5. 2026-06-29 21:58 UTCEG score recompute
  6. 2026-06-29 21:58 UTCGHSA enrichment
  7. 2026-06-29 14:06 UTCEPSS rescore
  8. 2026-06-28 21:27 UTCEG score recompute
  9. 2026-06-28 21:27 UTCGHSA enrichment
  10. 2026-06-28 14:07 UTCEPSS rescore
  11. 2026-06-28 04:56 UTCEPSS rescore
  12. 2026-06-28 04:56 UTCEPSS rescore
  13. 2026-06-27 20:56 UTCEG score recompute
  14. 2026-06-27 20:55 UTCGHSA enrichment
  15. 2026-06-27 03:08 UTCEPSS rescore
  16. 2026-06-26 20:23 UTCEG score recompute
  17. 2026-06-26 20:23 UTCGHSA enrichment
  18. 2026-06-25 19:53 UTCEG score recompute
  19. 2026-06-25 19:53 UTCGHSA enrichment
  20. 2026-06-25 13:49 UTCEPSS rescore
  21. 2026-06-24 19:21 UTCEG score recompute
  22. 2026-06-24 19:21 UTCGHSA enrichment
  23. 2026-06-24 14:05 UTCEPSS rescore
  24. 2026-06-23 21:32 UTCEPSS rescore
  25. 2026-06-23 18:23 UTCEG score recompute
  26. 2026-06-23 18:23 UTCGHSA enrichment
  27. 2026-06-22 17:49 UTCEG score recompute
  28. 2026-06-22 17:45 UTCNVD updatefirst tracked

Frequently asked(5)

What is CVE-2026-12725?
CVE-2026-12725 is a medium vulnerability published on June 22, 2026. 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…
When was CVE-2026-12725 disclosed?
CVE-2026-12725 was first published in the National Vulnerability Database on June 22, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-12725 actively exploited?
CVE-2026-12725 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 32.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-12725?
CVE-2026-12725 has a CVSS v3 base score of 5.9 (NVD).
How do I remediate CVE-2026-12725?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-12725, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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