CVE-2026-68803

HIGHPre-NVD 7.87.8—
EchelonGraph scoreHIGH confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-08-11. the CNA's CVSS baseline 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:microsoft, epss, ghsa
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.

Access of resource using incompatible type ('type confusion') in Microsoft Office Excel allows an unauthorized attacker to execute code 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
23%
KEV
Not listed

Published

August 11, 2026

Last Modified

August 20, 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-2026-68803

Vendor Advisories for CVE-2026-68803(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 86× in last 7d / 143× 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 143 total refreshes for this CVE.

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

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-68803?
CVE-2026-68803 is a high vulnerability published on August 11, 2026. Access of resource using incompatible type ('type confusion') in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
When was CVE-2026-68803 disclosed?
CVE-2026-68803 was first published in the National Vulnerability Database on August 11, 2026, with the most recent update on August 20, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-68803 actively exploited?
CVE-2026-68803 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 77.0% of all scored CVEs.
What is the CVSS score of CVE-2026-68803?
CVE-2026-68803 has a CVSS v4.0 base score of 7.8 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-68803?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-68803, 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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