CVE-2026-34342

HIGHPre-NVD 7.07.0—
EchelonGraph scoreMEDIUM confidence

Score 7.0 from GitHub Security Advisory (severity: HIGH) published 2026-05-12. the CNA's CVSS baseline 7.0; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:microsoft, epss, ghsa
7.0EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.0Exploit: None knownExposed: 0

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

Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Print Spooler Components allows an authorized attacker to elevate privileges locally.

CVSS v3
7.0
EG Score
7.0(medium)
EG Risk
32(Track)
EG Risk 32/100SSVC: 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
Severity70% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
22%
KEV
Not listed

Published

May 12, 2026

Last Modified

August 10, 2026

Advisory Details (1)

Auto-updated Jun 11, 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-2026-34342

Vendor Advisories for CVE-2026-34342(1)

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 7× in last 7d / 28× 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 279 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-34342?
CVE-2026-34342 is a high vulnerability published on May 12, 2026. Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Print Spooler Components allows an authorized attacker to elevate privileges locally.
When was CVE-2026-34342 disclosed?
CVE-2026-34342 was first published in the National Vulnerability Database on May 12, 2026, with the most recent update on August 10, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-34342 actively exploited?
CVE-2026-34342 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 78.2% of all scored CVEs.
What is the CVSS score of CVE-2026-34342?
CVE-2026-34342 has a CVSS v4.0 base score of 7.0 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-34342?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-34342, 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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