CVE-2026-62909

HIGHPre-NVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.8 under the CNA's CVSS (NVD's own analysis pending). EPSS exploit probability: 0.3%, top 78% 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
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.8Exploit: None knownExposed: 0

A fix is available — apply it.

Uncaught exception in .NET allows an authorized attacker to elevate privileges locally.

CVSS v3
7.8
EG Score
7.8(medium)
EG Risk
35(Track)
EG Risk 35/100SSVC: 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
Severity78% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
22%
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-2026-62909

Vendor Advisories for CVE-2026-62909(19)

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

Patch Availability(18)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntudotnet10 (10.0.111-10.0.11-0ubuntu1~26.04.1) @ resolute2026-09-19ubuntu
redhatdotnet9.0-0:9.0.120-1.el9_62026-08-24redhat
redhatdotnet8.0-0:8.0.130-1.el9_62026-08-24redhat
redhatdotnet8.0-0:8.0.130-1.el10_02026-08-24redhat
redhatdotnet8.0-0:8.0.130-1.el9_42026-08-24redhat
redhatdotnet9.0-0:9.0.120-1.el10_02026-08-24redhat
redhatdotnet10.0-0:10.0.111-1.el10_22026-08-17redhat
redhatdotnet10.0-0:10.0.111-1.el9_82026-08-17redhat
redhatdotnet9.0-0:9.0.120-1.el9_82026-08-17redhat
redhatdotnet8-0-main-8.0.130-0.1.hum12026-08-16redhat
redhatdotnet10-0-main-10.0.11-1.hum12026-08-15redhat
redhatdotnet9.0-0:9.0.120-1.el8_102026-08-13redhat
redhatdotnet8.0-0:8.0.130-1.el8_102026-08-13redhat
redhatdotnet10.0-0:10.0.111-1.el8_102026-08-13redhat
redhatdotnet8.0-0:8.0.130-1.el9_82026-08-13redhat
redhatdotnet8.0-0:8.0.130-1.el10_22026-08-13redhat
redhatdotnet9.0-0:9.0.120-1.el10_22026-08-13redhat
redhatdotnet9-0-main-9.0.119-2.hum12026-07-24redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(8 across 1 ecosystem)
NuGet(8)
PackageVulnerable rangeFixed inDependents
Microsoft.NETCore.App.Runtime.linux-arm8.0.0 ... 8.0.8 (29 versions)8.0.30—
Microsoft.NETCore.App.Runtime.linux-arm648.0.0 ... 8.0.8 (29 versions)8.0.30—
Microsoft.NETCore.App.Runtime.linux-musl-arm8.0.0 ... 8.0.8 (29 versions)8.0.30—
Microsoft.NETCore.App.Runtime.linux-musl-arm648.0.0 ... 8.0.8 (29 versions)8.0.30—
Microsoft.NETCore.App.Runtime.linux-musl-x648.0.0 ... 8.0.8 (29 versions)8.0.30—
Microsoft.NETCore.App.Runtime.linux-x648.0.0 ... 8.0.8 (29 versions)8.0.30—
Microsoft.NETCore.App.Runtime.osx-arm648.0.0 ... 8.0.8 (29 versions)8.0.30—
Microsoft.NETCore.App.Runtime.osx-x648.0.0 ... 8.0.8 (29 versions)8.0.30—

Weakness Classification(2)

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

Additional Vendor Advisories

(1)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 25× in last 7d / 128× 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 203 total refreshes for this CVE.

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

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-62909?
CVE-2026-62909 is a high vulnerability published on August 11, 2026. Uncaught exception in .NET allows an authorized attacker to elevate privileges locally.
When was CVE-2026-62909 disclosed?
CVE-2026-62909 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-2026-62909 actively exploited?
CVE-2026-62909 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 78.4% of all scored CVEs.
What is the CVSS score of CVE-2026-62909?
CVE-2026-62909 has a CVSS v4.0 base score of 7.8 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-62909?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-62909, 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-2026-62909

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