CVE-2026-55052

HIGHPre-NVD 8.88.8—
EchelonGraph scoreHIGH confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-07-14. the CNA's CVSS baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:microsoft, epss, ghsa
Trending — 4 sources updated this week
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 8.8Exploit: None knownExposed: 0

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

Missing authorization in Microsoft Office SharePoint allows an authorized attacker to elevate privileges over a network.

CVSS v3
8.8
EG Score
8.8(high)
EG Risk
40(Track)
EG Risk 40/100SSVC: 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
Severity88% × 45%
Exploitation1% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
48%
KEV
Not listed

Published

July 14, 2026

Last Modified

July 30, 2026

Advisory Details (1)

Auto-updated Jul 14, 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-2026-55052

Vendor Advisories for CVE-2026-55052(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 / 91× 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. 2026-08-03 13:28 UTCEG score recompute
  2. 2026-08-03 13:28 UTCGHSA enrichment
  3. 2026-08-03 10:36 UTCEPSS rescore
  4. 2026-08-03 02:23 UTCVendor advisory
  5. 2026-08-03 02:23 UTCGHSA enrichment
  6. 2026-08-02 15:18 UTCVendor advisory
  7. 2026-08-02 15:18 UTCGHSA enrichment
  8. 2026-08-02 04:14 UTCEG score recompute
  9. 2026-08-02 04:14 UTCVendor advisory
  10. 2026-08-02 04:13 UTCGHSA enrichment
  11. 2026-08-02 02:27 UTCEPSS rescore
  12. 2026-08-01 17:08 UTCVendor advisory
  13. 2026-08-01 17:08 UTCGHSA enrichment
  14. 2026-08-01 06:03 UTCEG score recompute
  15. 2026-08-01 06:03 UTCVendor advisory
  16. 2026-08-01 06:03 UTCGHSA enrichment
  17. 2026-08-01 04:16 UTCEPSS rescore
  18. 2026-07-31 18:58 UTCVendor advisory
  19. 2026-07-31 18:58 UTCGHSA enrichment
  20. 2026-07-31 07:53 UTCVendor advisory
  21. 2026-07-31 07:53 UTCGHSA enrichment
  22. 2026-07-30 20:47 UTCGHSA enrichment
  23. 2026-07-30 19:53 UTCGHSA enrichment
  24. 2026-07-30 18:06 UTCEG score recompute
  25. 2026-07-30 18:06 UTCVendor advisory
Show 66 more
  1. 2026-07-30 18:06 UTCGHSA enrichment
  2. 2026-07-30 16:28 UTCEPSS rescore
  3. 2026-07-30 08:10 UTCEG score recompute
  4. 2026-07-30 08:10 UTCVendor advisory
  5. 2026-07-30 08:10 UTCGHSA enrichment
  6. 2026-07-30 01:30 UTCEPSS rescore
  7. 2026-07-29 20:56 UTCVendor advisory
  8. 2026-07-29 20:56 UTCGHSA enrichment
  9. 2026-07-29 08:41 UTCVendor advisory
  10. 2026-07-29 08:41 UTCGHSA enrichment
  11. 2026-07-28 21:37 UTCVendor advisory
  12. 2026-07-28 21:36 UTCGHSA enrichment
  13. 2026-07-28 15:52 UTCEG score recompute
  14. 2026-07-28 15:52 UTCVendor advisory
  15. 2026-07-28 15:51 UTCGHSA enrichment
  16. 2026-07-28 15:37 UTCEPSS rescore
  17. 2026-07-28 11:28 UTCVendor advisory
  18. 2026-07-28 11:28 UTCGHSA enrichment
  19. 2026-07-28 00:04 UTCVendor advisory
  20. 2026-07-28 00:04 UTCGHSA enrichment
  21. 2026-07-27 22:21 UTCVendor advisory
  22. 2026-07-27 22:20 UTCGHSA enrichment
  23. 2026-07-27 16:07 UTCEG score recompute
  24. 2026-07-27 16:07 UTCVendor advisory
  25. 2026-07-27 16:07 UTCGHSA enrichment
  26. 2026-07-27 05:02 UTCVendor advisory
  27. 2026-07-27 05:01 UTCGHSA enrichment
  28. 2026-07-26 17:52 UTCVendor advisory
  29. 2026-07-26 17:52 UTCGHSA enrichment
  30. 2026-07-26 15:53 UTCEG score recompute
  31. 2026-07-26 15:53 UTCVendor advisory
  32. 2026-07-26 15:53 UTCGHSA enrichment
  33. 2026-07-26 14:54 UTCEPSS rescore
  34. 2026-07-26 04:47 UTCEG score recompute
  35. 2026-07-26 04:47 UTCVendor advisory
  36. 2026-07-26 04:47 UTCGHSA enrichment
  37. 2026-07-25 14:18 UTCEPSS rescore
  38. 2026-07-24 14:18 UTCEPSS rescore
  39. 2026-07-23 14:18 UTCEPSS rescore
  40. 2026-07-23 03:20 UTCEG score recompute
  41. 2026-07-22 14:08 UTCEPSS rescore
  42. 2026-07-21 15:25 UTCEPSS rescore
  43. 2026-07-20 17:08 UTCEPSS rescore
  44. 2026-07-19 14:31 UTCEPSS rescore
  45. 2026-07-19 14:31 UTCEPSS rescore
  46. 2026-07-19 02:51 UTCEG score recompute
  47. 2026-07-19 02:51 UTCVendor advisory
  48. 2026-07-19 02:51 UTCGHSA enrichment
  49. 2026-07-19 02:29 UTCEPSS rescore
  50. 2026-07-18 10:04 UTCEPSS rescore
  51. 2026-07-17 01:10 UTCVendor advisory
  52. 2026-07-17 01:10 UTCGHSA enrichment
  53. 2026-07-16 17:03 UTCEPSS rescore
  54. 2026-07-16 14:05 UTCVendor advisory
  55. 2026-07-16 14:04 UTCGHSA enrichment
  56. 2026-07-16 02:59 UTCVendor advisory
  57. 2026-07-16 02:59 UTCGHSA enrichment
  58. 2026-07-15 16:57 UTCEPSS rescore
  59. 2026-07-15 16:57 UTCEPSS rescore
  60. 2026-07-15 15:53 UTCVendor advisory
  61. 2026-07-15 15:53 UTCGHSA enrichment
  62. 2026-07-15 04:47 UTCVendor advisory
  63. 2026-07-15 04:47 UTCGHSA enrichment
  64. 2026-07-14 17:42 UTCEG score recompute
  65. 2026-07-14 17:42 UTCVendor advisory
  66. 2026-07-14 17:40 UTCMITRE cvelistV5first tracked

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-55052?
CVE-2026-55052 is a high vulnerability published on July 14, 2026. Missing authorization in Microsoft Office SharePoint allows an authorized attacker to elevate privileges over a network.
When was CVE-2026-55052 disclosed?
CVE-2026-55052 was first published in the National Vulnerability Database on July 14, 2026, with the most recent update on July 30, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-55052 actively exploited?
CVE-2026-55052 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 52.4% of all scored CVEs.
What is the CVSS score of CVE-2026-55052?
CVE-2026-55052 has a CVSS v4.0 base score of 8.8 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-55052?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-55052, 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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