CVE-2026-85875

MEDIUMPre-NVD 5.55.5—
EchelonGraph scoreHIGH confidence

Score 5.5 from GitHub Security Advisory published 2026-09-08. The CNA's CVSS baseline 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:microsoft, epss, ghsa
Trending — 4 sources updated this week
5.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 5.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.

CVSS v3
5.5
EG Score
5.5MEDIUMhigh confidence
EG Risk
25
EG Risk 25/100CISA SSVC

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
Severity55% × 45%
Exploitation1% × 40%
Automatability0% × 15%
CISA SSVC: Track at every mission impact level.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.5%
EPSS %ILE
43rd
KEV
Not listed

CISA SSVCTrack at every mission impact level.

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

September 8, 2026

Last Modified

October 1, 2026

Advisory Details (1)

Auto-updated Sep 9, 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-2026-85875

Vendor Advisories for CVE-2026-85875(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 31× in last 7d / 146× 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 146 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-85875?
CVE-2026-85875 is a medium vulnerability published on September 8, 2026. Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.
When was CVE-2026-85875 disclosed?
CVE-2026-85875 was first published on September 8, 2026, with the most recent update on October 1, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-85875 actively exploited?
CVE-2026-85875 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (43rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-85875?
CVE-2026-85875 has a CVSS base score of 5.5 (the CNA's own assessment, by microsoft; NVD's own analysis pending).
How do I remediate CVE-2026-85875?
A fix for CVE-2026-85875 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-85875 are linked in the Vendor Advisories panel on this page.

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