CVE-2026-45466

LOWPre-NVD 3.33.3—
EchelonGraph scoreHIGH confidence

Score 3.3 from GitHub Security Advisory (severity: LOW) published 2026-06-09. the CNA's CVSS baseline 3.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:microsoft, epss, ghsa
Trending — 4 sources updated this week
3.3
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 3.3Exploit: NoneExposed: 0

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

Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to disclose information locally.

CVSS v3
3.3
EG Score
3.3(high)
EPSS
29.1%
KEV
Not listed

Published

June 9, 2026

Last Modified

July 1, 2026

References (1)

Vendor Advisories for CVE-2026-45466(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 12× in last 7d / 57× 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.

  1. 2026-07-06 16:27 UTCEPSS rescore
  2. 2026-07-06 02:23 UTCEPSS rescore
  3. 2026-07-05 13:44 UTCEG score recompute
  4. 2026-07-05 13:44 UTCVendor advisory
  5. 2026-07-05 13:44 UTCGHSA enrichment
  6. 2026-07-05 02:30 UTCEPSS rescore
  7. 2026-07-04 06:31 UTCEPSS rescore
  8. 2026-07-02 00:41 UTCEG score recompute
  9. 2026-07-02 00:41 UTCVendor advisory
  10. 2026-07-02 00:41 UTCGHSA enrichment
  11. 2026-07-01 15:07 UTCEPSS rescore
  12. 2026-06-30 23:22 UTCEPSS rescore
  13. 2026-06-28 20:17 UTCEG score recompute
  14. 2026-06-28 20:17 UTCVendor advisory
  15. 2026-06-28 20:17 UTCGHSA enrichment
  16. 2026-06-28 14:07 UTCEPSS rescore
  17. 2026-06-28 04:56 UTCEPSS rescore
  18. 2026-06-28 04:56 UTCEPSS rescore
  19. 2026-06-27 03:08 UTCEPSS rescore
  20. 2026-06-25 15:57 UTCEG score recompute
  21. 2026-06-25 15:57 UTCVendor advisory
  22. 2026-06-25 15:57 UTCGHSA enrichment
  23. 2026-06-25 13:49 UTCEPSS rescore
  24. 2026-06-24 14:05 UTCEPSS rescore
  25. 2026-06-23 21:33 UTCEPSS rescore
Show 32 more
  1. 2026-06-23 21:33 UTCEPSS rescore
  2. 2026-06-22 14:25 UTCEPSS rescore
  3. 2026-06-22 14:25 UTCEPSS rescore
  4. 2026-06-22 11:37 UTCEG score recompute
  5. 2026-06-22 11:37 UTCVendor advisory
  6. 2026-06-22 11:36 UTCGHSA enrichment
  7. 2026-06-21 14:56 UTCEPSS rescore
  8. 2026-06-21 14:56 UTCEPSS rescore
  9. 2026-06-21 01:59 UTCEPSS rescore
  10. 2026-06-19 19:25 UTCEPSS rescore
  11. 2026-06-19 06:23 UTCEG score recompute
  12. 2026-06-19 06:23 UTCVendor advisory
  13. 2026-06-19 06:23 UTCGHSA enrichment
  14. 2026-06-18 17:52 UTCEPSS rescore
  15. 2026-06-18 17:52 UTCEPSS rescore
  16. 2026-06-17 17:53 UTCEPSS rescore
  17. 2026-06-16 17:52 UTCEPSS rescore
  18. 2026-06-16 02:02 UTCEG score recompute
  19. 2026-06-16 02:02 UTCVendor advisory
  20. 2026-06-16 02:02 UTCGHSA enrichment
  21. 2026-06-15 17:49 UTCEPSS rescore
  22. 2026-06-13 23:00 UTCEPSS rescore
  23. 2026-06-12 23:12 UTCEPSS rescore
  24. 2026-06-12 23:12 UTCEPSS rescore
  25. 2026-06-12 21:41 UTCEG score recompute
  26. 2026-06-12 21:41 UTCVendor advisory
  27. 2026-06-12 21:41 UTCGHSA enrichment
  28. 2026-06-11 14:00 UTCEPSS rescore
  29. 2026-06-10 22:18 UTCEPSS rescore
  30. 2026-06-09 17:22 UTCEG score recompute
  31. 2026-06-09 17:22 UTCVendor advisory
  32. 2026-06-09 17:17 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-45466?
CVE-2026-45466 is a low vulnerability published on June 9, 2026. Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to disclose information locally.
When was CVE-2026-45466 disclosed?
CVE-2026-45466 was first published in the National Vulnerability Database on June 9, 2026, with the most recent update on July 1, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-45466 actively exploited?
CVE-2026-45466 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 29.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-45466?
CVE-2026-45466 has a CVSS v4.0 base score of 3.3 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-45466?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-45466, 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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