CVE-2026-42974

HIGHPre-NVD 8.18.1—
EchelonGraph scoreMEDIUM confidence

Score 8.1 from GitHub Security Advisory (severity: HIGH) published 2026-06-09. the CNA's CVSS baseline 8.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:microsoft, epss, ghsa
Trending — 4 sources updated this week
8.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 8.1Exploit: None knownExposed: 0

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

Integer overflow or wraparound in Windows Performance Monitor allows an unauthorized attacker to execute code over a network.

CVSS v3
8.1
EG Score
8.1(medium)
EG Risk
37(Track)
EG Risk 37/100SSVC: 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
Severity81% × 45%
Exploitation1% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
49%
KEV
Not listed

Published

June 9, 2026

Last Modified

August 25, 2026

Advisory Details (1)

Auto-updated Jun 9, 2026
Patch available. Sources: microsoft.
microsoft Patch Available

Security Update Guide - Microsoft Security Response Center

Security Update Guide - Microsoft Security Response Center. Patch available via Microsoft Security Update

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42974

Vendor Advisories for CVE-2026-42974(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 9× in last 7d / 57× 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 358 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-42974?
CVE-2026-42974 is a high vulnerability published on June 9, 2026. Integer overflow or wraparound in Windows Performance Monitor allows an unauthorized attacker to execute code over a network.
When was CVE-2026-42974 disclosed?
CVE-2026-42974 was first published in the National Vulnerability Database on June 9, 2026, with the most recent update on August 25, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-42974 actively exploited?
CVE-2026-42974 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 51.2% of all scored CVEs.
What is the CVSS score of CVE-2026-42974?
CVE-2026-42974 has a CVSS v4.0 base score of 8.1 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-42974?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-42974, 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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