CVE-2026-62820

HIGHPre-NVD 8.18.1—
EchelonGraph scoreMEDIUM confidence

Score 8.1 from GitHub Security Advisory (severity: HIGH) published 2026-08-11. 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.

Concurrent execution using shared resource with improper synchronization ('race condition') in Windows DNS 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
44%
KEV
Not listed

Published

August 11, 2026

Last Modified

September 16, 2026

Advisory Details (1)

Auto-updated Aug 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-2026-62820

Vendor Advisories for CVE-2026-62820(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 33× in last 7d / 174× 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 308 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-62820?
CVE-2026-62820 is a high vulnerability published on August 11, 2026. Concurrent execution using shared resource with improper synchronization ('race condition') in Windows DNS allows an unauthorized attacker to execute code over a network.
When was CVE-2026-62820 disclosed?
CVE-2026-62820 was first published in the National Vulnerability Database on August 11, 2026, with the most recent update on September 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-62820 actively exploited?
CVE-2026-62820 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 55.5% of all scored CVEs.
What is the CVSS score of CVE-2026-62820?
CVE-2026-62820 has a CVSS v4.0 base score of 8.1 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-62820?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-62820, 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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