CVE-2026-12245

HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM 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
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.5Exploit: None knownExposed: 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(medium)
EG Risk
38(Track)
EG Risk 38/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity75% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
25%
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 (4.8.0-1ubuntu0.1~esm1) @ noble2026-08-30ubuntu

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.

Affected Packages

(2 across 2 ecosystems)
Alpine:v3.24(1)
PackageVulnerable rangeFixed inDependents
nsd—4.14.3-r0—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
nsd4.12.0-1 ... 4.14.2-1 (11 versions)4.14.3-1—

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 6× in last 7d / 80× 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.

Showing the most recent 100 of 274 total refreshes for this CVE.

  1. 2026-09-11 14:52 UTCEPSS rescore
  2. 2026-09-11 09:36 UTCEPSS rescore
  3. 2026-09-10 09:34 UTCEPSS rescore
  4. 2026-09-08 22:00 UTCEPSS rescore
  5. 2026-09-07 16:01 UTCEPSS rescore
  6. 2026-09-06 13:47 UTCEPSS rescore
  7. 2026-09-04 05:06 UTCEPSS rescore
  8. 2026-09-02 14:11 UTCEPSS rescore
  9. 2026-09-01 13:53 UTCEPSS rescore
  10. 2026-09-01 04:39 UTCEPSS rescore
  11. 2026-08-30 19:45 UTCEG score recompute
  12. 2026-08-30 19:45 UTCVendor advisory
  13. 2026-08-30 19:45 UTCGHSA enrichment
  14. 2026-08-30 19:17 UTCEPSS rescore
  15. 2026-08-30 01:21 UTCEPSS rescore
  16. 2026-08-28 21:40 UTCEPSS rescore
  17. 2026-08-28 02:57 UTCEG score recompute
  18. 2026-08-28 02:57 UTCVendor advisory
  19. 2026-08-28 02:57 UTCGHSA enrichment
  20. 2026-08-27 14:24 UTCEPSS rescore
  21. 2026-08-25 13:48 UTCEPSS rescore
  22. 2026-08-24 21:53 UTCEG score recompute
  23. 2026-08-24 21:53 UTCVendor advisory
  24. 2026-08-24 21:53 UTCGHSA enrichment
  25. 2026-08-24 04:33 UTCVendor advisory
Show 75 more
  1. 2026-08-24 04:33 UTCGHSA enrichment
  2. 2026-08-23 13:52 UTCVendor advisory
  3. 2026-08-23 13:52 UTCGHSA enrichment
  4. 2026-08-23 00:53 UTCEG score recompute
  5. 2026-08-23 00:53 UTCVendor advisory
  6. 2026-08-23 00:53 UTCGHSA enrichment
  7. 2026-08-23 00:19 UTCEPSS rescore
  8. 2026-08-22 11:23 UTCEG score recompute
  9. 2026-08-22 11:23 UTCVendor advisory
  10. 2026-08-22 11:23 UTCGHSA enrichment
  11. 2026-08-21 23:48 UTCEPSS rescore
  12. 2026-08-21 22:19 UTCVendor advisory
  13. 2026-08-21 22:19 UTCGHSA enrichment
  14. 2026-08-21 09:12 UTCEG score recompute
  15. 2026-08-21 09:12 UTCVendor advisory
  16. 2026-08-21 09:12 UTCGHSA enrichment
  17. 2026-08-20 22:55 UTCEPSS rescore
  18. 2026-08-20 20:09 UTCVendor advisory
  19. 2026-08-20 20:09 UTCGHSA enrichment
  20. 2026-08-20 07:12 UTCEG score recompute
  21. 2026-08-20 07:12 UTCVendor advisory
  22. 2026-08-20 07:12 UTCGHSA enrichment
  23. 2026-08-19 17:03 UTCEPSS rescore
  24. 2026-08-19 14:50 UTCVendor advisory
  25. 2026-08-19 14:50 UTCGHSA enrichment
  26. 2026-08-19 01:37 UTCEG score recompute
  27. 2026-08-19 01:37 UTCVendor advisory
  28. 2026-08-19 01:37 UTCGHSA enrichment
  29. 2026-08-18 13:48 UTCEPSS rescore
  30. 2026-08-17 06:11 UTCVendor advisory
  31. 2026-08-17 06:11 UTCGHSA enrichment
  32. 2026-08-16 17:08 UTCEG score recompute
  33. 2026-08-16 17:08 UTCVendor advisory
  34. 2026-08-16 17:08 UTCGHSA enrichment
  35. 2026-08-16 14:56 UTCEPSS rescore
  36. 2026-08-16 04:10 UTCEG score recompute
  37. 2026-08-16 04:10 UTCVendor advisory
  38. 2026-08-16 04:10 UTCGHSA enrichment
  39. 2026-08-16 02:14 UTCEPSS rescore
  40. 2026-08-15 15:13 UTCVendor advisory
  41. 2026-08-15 15:13 UTCGHSA enrichment
  42. 2026-08-15 02:15 UTCEG score recompute
  43. 2026-08-15 02:15 UTCVendor advisory
  44. 2026-08-15 02:15 UTCGHSA enrichment
  45. 2026-08-15 01:30 UTCEPSS rescore
  46. 2026-08-14 13:17 UTCVendor advisory
  47. 2026-08-14 13:17 UTCGHSA enrichment
  48. 2026-08-14 00:20 UTCEG score recompute
  49. 2026-08-14 00:20 UTCVendor advisory
  50. 2026-08-14 00:20 UTCGHSA enrichment
  51. 2026-08-13 22:00 UTCEPSS rescore
  52. 2026-08-13 11:22 UTCGHSA enrichment
  53. 2026-08-12 22:24 UTCEG score recompute
  54. 2026-08-12 22:24 UTCVendor advisory
  55. 2026-08-12 22:24 UTCGHSA enrichment
  56. 2026-08-12 13:50 UTCEPSS rescore
  57. 2026-08-12 09:27 UTCVendor advisory
  58. 2026-08-12 09:27 UTCGHSA enrichment
  59. 2026-08-11 20:29 UTCEG score recompute
  60. 2026-08-11 20:29 UTCVendor advisory
  61. 2026-08-11 20:29 UTCGHSA enrichment
  62. 2026-08-11 13:42 UTCEPSS rescore
  63. 2026-08-11 07:32 UTCEG score recompute
  64. 2026-08-11 07:32 UTCVendor advisory
  65. 2026-08-11 07:32 UTCGHSA enrichment
  66. 2026-08-10 23:59 UTCEPSS rescore
  67. 2026-08-10 18:34 UTCVendor advisory
  68. 2026-08-10 18:34 UTCGHSA enrichment
  69. 2026-08-10 05:05 UTCVendor advisory
  70. 2026-08-10 05:05 UTCGHSA enrichment
  71. 2026-08-09 16:08 UTCEG score recompute
  72. 2026-08-09 16:08 UTCVendor advisory
  73. 2026-08-09 16:08 UTCGHSA enrichment
  74. 2026-08-09 13:46 UTCEPSS rescore
  75. 2026-08-09 03:10 UTCVendor advisory

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 0% probability of exploitation in the next 30 days, which ranks it in the top 75.4% of all scored CVEs.
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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