CVE-2026-55013

HIGHPre-NVD 7.17.1—
EchelonGraph scoreMEDIUM confidence

Score 7.1 from GitHub Security Advisory (severity: HIGH) published 2026-08-21. the CNA's CVSS baseline 7.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:microsoft, epss, ghsa
Trending — 4 sources updated this week
7.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.1Exploit: None knownExposed: 0

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

Uncontrolled search path element in Windows Remote Help Defense allows an authorized attacker to perform spoofing locally.

CVSS v3
7.1
EG Score
7.1(medium)
EG Risk
32(Track)
EG Risk 32/100SSVC: 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
Severity71% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
14%
KEV
Not listed

Published

August 20, 2026

Last Modified

September 16, 2026

Advisory Details (1)

Auto-updated Aug 20, 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-2026-55013

Vendor Advisories for CVE-2026-55013(1)

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.

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 40× in last 7d / 189× 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 207 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-55013?
CVE-2026-55013 is a high vulnerability published on August 20, 2026. Uncontrolled search path element in Windows Remote Help Defense allows an authorized attacker to perform spoofing locally.
When was CVE-2026-55013 disclosed?
CVE-2026-55013 was first published in the National Vulnerability Database on August 20, 2026, with the most recent update on September 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-55013 actively exploited?
CVE-2026-55013 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 86.3% of all scored CVEs.
What is the CVSS score of CVE-2026-55013?
CVE-2026-55013 has a CVSS v4.0 base score of 7.1 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-55013?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-55013, 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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