CVE-2026-55124

MEDIUMPre-NVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

Score 5.5 from GitHub Security Advisory published 2026-07-14. 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: 1%CVSS: 5.5Exploit: None knownExposed: 0

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

Improper validation of specified type of input in Microsoft Office Word allows an unauthorized attacker to disclose information locally.

CVSS v3
5.5
EG Score
5.5(medium)
EG Risk
25(Track)
EG Risk 25/100SSVC: 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
Severity55% × 45%
Exploitation1% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
47%
KEV
Not listed

Published

July 14, 2026

Last Modified

September 17, 2026

Advisory Details (1)

Auto-updated Jul 15, 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-2026-55124

Vendor Advisories for CVE-2026-55124(2)

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

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 15× in last 7d / 90× 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 228 total refreshes for this CVE.

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

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-55124?
CVE-2026-55124 is a medium vulnerability published on July 14, 2026. Improper validation of specified type of input in Microsoft Office Word allows an unauthorized attacker to disclose information locally.
When was CVE-2026-55124 disclosed?
CVE-2026-55124 was first published in the National Vulnerability Database on July 14, 2026, with the most recent update on September 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-55124 actively exploited?
CVE-2026-55124 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 52.9% of all scored CVEs.
What is the CVSS score of CVE-2026-55124?
CVE-2026-55124 has a CVSS v4.0 base score of 5.5 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-55124?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-55124, 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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