CVE-2026-12245

HIGHNVD 7.57.5—
EchelonGraph scoreHIGH confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-06-25. NVD baseline CVSS 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 4 sources updated this week
7.5
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.5Exploit: NoneExposed: 0

A fix is available — apply it.

NSD from version 4.13.0 has a heap use-after-free bug in logging errors on TLS connections, causing a crash of the server process, which can be triggered trivially by sending a DNS query over a DoT connection, and closing the connection without reading the response.

CVSS v3
7.5
EG Score
7.5(high)
EPSS
19.2%
KEV
Not listed

Published

June 25, 2026

Last Modified

June 26, 2026

Advisory Details (1)

Auto-updated Jun 25, 2026
No patch confirmed yet.
generic
https://www.nlnetlabs.nl/downloads/nsd/CVE-2026-12245.txt

Vendor Advisories for CVE-2026-12245(1)

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

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntunsd (4.14.0-1ubuntu0.1~esm1) @ resolute2026-07-06ubuntu

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

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

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 41× in last 7d / 76× 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. 2026-07-06 18:55 UTCEG score recompute
  2. 2026-07-06 18:55 UTCVendor advisory
  3. 2026-07-06 18:54 UTCGHSA enrichment
  4. 2026-07-06 16:27 UTCEPSS rescore
  5. 2026-07-06 05:56 UTCEG score recompute
  6. 2026-07-06 05:56 UTCGHSA enrichment
  7. 2026-07-06 02:23 UTCEPSS rescore
  8. 2026-07-05 16:53 UTCEG score recompute
  9. 2026-07-05 16:53 UTCVendor advisory
  10. 2026-07-05 16:53 UTCGHSA enrichment
  11. 2026-07-05 03:45 UTCEG score recompute
  12. 2026-07-05 03:44 UTCGHSA enrichment
  13. 2026-07-05 02:30 UTCEPSS rescore
  14. 2026-07-05 02:30 UTCEPSS rescore
  15. 2026-07-04 14:45 UTCEG score recompute
  16. 2026-07-04 14:45 UTCVendor advisory
  17. 2026-07-04 14:44 UTCGHSA enrichment
  18. 2026-07-04 06:31 UTCEPSS rescore
  19. 2026-07-04 01:46 UTCEG score recompute
  20. 2026-07-04 01:46 UTCVendor advisory
  21. 2026-07-04 01:46 UTCGHSA enrichment
  22. 2026-07-03 12:48 UTCEG score recompute
  23. 2026-07-03 12:48 UTCVendor advisory
  24. 2026-07-03 12:47 UTCGHSA enrichment
  25. 2026-07-02 22:40 UTCEG score recompute
Show 51 more
  1. 2026-07-02 22:40 UTCGHSA enrichment
  2. 2026-07-02 09:39 UTCEG score recompute
  3. 2026-07-02 09:39 UTCVendor advisory
  4. 2026-07-02 09:39 UTCGHSA enrichment
  5. 2026-07-01 20:41 UTCEG score recompute
  6. 2026-07-01 20:41 UTCVendor advisory
  7. 2026-07-01 20:41 UTCGHSA enrichment
  8. 2026-07-01 15:06 UTCEPSS rescore
  9. 2026-07-01 15:06 UTCEPSS rescore
  10. 2026-07-01 07:44 UTCEG score recompute
  11. 2026-07-01 07:44 UTCVendor advisory
  12. 2026-07-01 07:44 UTCGHSA enrichment
  13. 2026-06-30 23:22 UTCEPSS rescore
  14. 2026-06-30 18:46 UTCEG score recompute
  15. 2026-06-30 18:46 UTCVendor advisory
  16. 2026-06-30 18:46 UTCGHSA enrichment
  17. 2026-06-30 05:48 UTCEG score recompute
  18. 2026-06-30 05:48 UTCVendor advisory
  19. 2026-06-30 05:48 UTCGHSA enrichment
  20. 2026-06-29 16:50 UTCEG score recompute
  21. 2026-06-29 16:50 UTCVendor advisory
  22. 2026-06-29 16:50 UTCGHSA enrichment
  23. 2026-06-29 14:06 UTCEPSS rescore
  24. 2026-06-29 03:51 UTCEG score recompute
  25. 2026-06-29 03:51 UTCGHSA enrichment
  26. 2026-06-28 14:51 UTCEG score recompute
  27. 2026-06-28 14:51 UTCVendor advisory
  28. 2026-06-28 14:51 UTCGHSA enrichment
  29. 2026-06-28 14:07 UTCEPSS rescore
  30. 2026-06-28 04:56 UTCEPSS rescore
  31. 2026-06-28 04:56 UTCEPSS rescore
  32. 2026-06-28 01:53 UTCEG score recompute
  33. 2026-06-28 01:53 UTCVendor advisory
  34. 2026-06-28 01:53 UTCGHSA enrichment
  35. 2026-06-27 12:55 UTCEG score recompute
  36. 2026-06-27 12:55 UTCVendor advisory
  37. 2026-06-27 12:55 UTCGHSA enrichment
  38. 2026-06-27 03:08 UTCEPSS rescore
  39. 2026-06-26 23:56 UTCEG score recompute
  40. 2026-06-26 23:56 UTCVendor advisory
  41. 2026-06-26 23:56 UTCGHSA enrichment
  42. 2026-06-26 10:58 UTCEG score recompute▼ 1.20
  43. 2026-06-26 10:58 UTCVendor advisory
  44. 2026-06-26 10:58 UTCGHSA enrichment
  45. 2026-06-26 03:53 UTCNVD updateCVSS v3 → 7.5
  46. 2026-06-25 21:05 UTCEG score recompute
  47. 2026-06-25 21:05 UTCVendor advisory
  48. 2026-06-25 21:05 UTCGHSA enrichment
  49. 2026-06-25 13:49 UTCEPSS rescore
  50. 2026-06-25 08:06 UTCEG score recompute
  51. 2026-06-25 08:05 UTCNVD updatefirst tracked

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-12245?
CVE-2026-12245 is a high vulnerability published on June 25, 2026. NSD from version 4.13.0 has a heap use-after-free bug in logging errors on TLS connections, causing a crash of the server process, which can be triggered trivially by sending a DNS query over a DoT connection, and closing the connection without reading the response.
When was CVE-2026-12245 disclosed?
CVE-2026-12245 was first published in the National Vulnerability Database on June 25, 2026, with the most recent update on June 26, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-12245 actively exploited?
CVE-2026-12245 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 19.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-12245?
CVE-2026-12245 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-12245?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-12245, 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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