CVE-2026-69277

HIGHPre-NVD 7.87.8—
EchelonGraph scoreHIGH confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-09-08. a secondary CVSS source baseline 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 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

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

Stack-based buffer overflow in Microsoft Local Security Authority Server (lsasrv) allows an authorized attacker to elevate privileges locally.

CVSS v3
7.8
EG Score
7.8(high)
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
25%
KEV
Not listed

Published

September 8, 2026

Last Modified

September 24, 2026

Advisory Details (1)

Auto-updated Sep 8, 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-2026-69277

Vendor Advisories for CVE-2026-69277(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 50× in last 7d / 120× 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 120 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-69277?
CVE-2026-69277 is a high vulnerability published on September 8, 2026. Stack-based buffer overflow in Microsoft Local Security Authority Server (lsasrv) allows an authorized attacker to elevate privileges locally.
When was CVE-2026-69277 disclosed?
CVE-2026-69277 was first published in the National Vulnerability Database on September 8, 2026, with the most recent update on September 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-69277 actively exploited?
CVE-2026-69277 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 75.2% of all scored CVEs.
What is the CVSS score of CVE-2026-69277?
CVE-2026-69277 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2026-69277?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-69277, 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

Explore the affected products and dependency analysis for CVE-2026-69277

Explore →

Is Your Infrastructure Affected by CVE-2026-69277?

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

Book a Demo →Browse All CVEs