CVE-2026-40012

MEDIUMPre-NVD 5.35.3—
EchelonGraph scoreMEDIUM confidence

Score 5.3 from GitHub Security Advisory published 2026-06-25. a secondary CVSS source baseline 5.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
5.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.3Exploit: None knownExposed: 0

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

ECS zero scoped answers are stored in the packet cache while they should not. This impacts only configurations that have ECS enabled;

CVSS v3
5.3
EG Score
5.3(medium)
EG Risk
28(Track)
EG Risk 28/100SSVC: 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
Severity53% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
24%
KEV
Not listed

Published

June 25, 2026

Last Modified

June 25, 2026

References (1)

Vendor Advisories for CVE-2026-40012(1)

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

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
pdns-recursor4.4.2-3 ... 5.4.4-1 (65 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
pdns-recursor4.8.4-1 ... 5.4.4-1 (50 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
pdns-recursor5.2.4-2 ... 5.2.9-0+deb13u1 (7 versions)5.2.11-0+deb13u1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
pdns-recursor5.2.4-2 ... 5.4.2-2 (17 versions)5.4.3-1—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 15× 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.

Showing the most recent 100 of 141 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-40012?
CVE-2026-40012 is a medium vulnerability published on June 25, 2026. ECS zero scoped answers are stored in the packet cache while they should not. This impacts only configurations that have ECS enabled;
When was CVE-2026-40012 disclosed?
CVE-2026-40012 was first published in the National Vulnerability Database on June 25, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-40012 actively exploited?
CVE-2026-40012 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 75.9% of all scored CVEs.
What is the CVSS score of CVE-2026-40012?
CVE-2026-40012 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2026-40012?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-40012, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-40012

Explore →

Is Your Infrastructure Affected by CVE-2026-40012?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs