CVE-2026-62898

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.5 under the CNA's CVSS (NVD's own analysis pending). EPSS exploit probability: 1.1%, top 36% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: cna:microsoft, epss
Trending — 3 sources updated this week
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 7.5Exploit: None knownExposed: 0

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

Use after free in Microsoft QUIC allows an unauthorized attacker to disclose information over a network.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
49(Track)
EG Risk 49/100SSVC: 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%
Exploitation1% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
64%
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-2026-62898

Vendor Advisories for CVE-2026-62898(2)

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

Affected Packages

(3 across 1 ecosystem)
NuGet(3)
PackageVulnerable rangeFixed inDependents
Microsoft.NETCore.App.Runtime.win-arm648.0.0 ... 8.0.8 (29 versions)8.0.30—
Microsoft.NETCore.App.Runtime.win-x648.0.0 ... 8.0.8 (29 versions)8.0.30—
Microsoft.NETCore.App.Runtime.win-x868.0.0 ... 8.0.8 (29 versions)8.0.30—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 25× in last 7d / 119× 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 189 total refreshes for this CVE.

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

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-62898?
CVE-2026-62898 is a high vulnerability published on August 11, 2026. Use after free in Microsoft QUIC allows an unauthorized attacker to disclose information over a network.
When was CVE-2026-62898 disclosed?
CVE-2026-62898 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-2026-62898 actively exploited?
CVE-2026-62898 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 35.5% of all scored CVEs.
What is the CVSS score of CVE-2026-62898?
CVE-2026-62898 has a CVSS v4.0 base score of 7.5 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-62898?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-62898, 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-2026-62898

Explore →

Is Your Infrastructure Affected by CVE-2026-62898?

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

Start Free Scan →Browse All CVEs