CVE-2026-58293

HIGHPre-NVD 8.18.1—
EchelonGraph scoreMEDIUM confidence

Score 8.1 from GitHub Security Advisory (severity: HIGH) published 2026-07-03. The CNA's CVSS baseline 8.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:microsoft, epss, ghsa
Trending — 4 sources updated this week
8.1EG
EchelonGraph verdictPlan mitigationSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.6%CVSS: 8.1Exploit: None knownExposed services: Not assessed

A fix is referenced (a reference tagged "Patch", often a source commit), but no release containing it is confirmed — find the release that contains it; until it is applied, mitigate (WAF / firewall / segmentation).

External control of file name or path in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.

CVSS v3
8.1
EG Score
8.1HIGHmedium confidence
EG Risk
37
EG Risk 37/100CISA SSVC

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
Severity81% × 45%
Exploitation1% × 40%
Automatability0% × 15%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
Action: A fix is referenced, but no release containing it is confirmed. Check the referenced fix and the vendor's advisory for a release that contains it and apply that within your standard update timelines; until then, restrict network exposure of the affected system or apply the vendor's mitigation.
EPSS PROB
0.6%
EPSS %ILE
47th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* at high (mission-essential systems).

A fix is referenced, but no release containing it is confirmed. Check the referenced fix and the vendor's advisory for a release that contains it and apply that within your standard update timelines; until then, restrict network exposure of the affected system or apply the vendor's mitigation.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

July 3, 2026

Last Modified

October 8, 2026

Advisory Details (1)

Auto-updated Jul 6, 2026
Fix referenced — no release confirmed yet. Sources: microsoft.
microsoftMentions a patch (unverified)

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-2026-58293

Vendor Advisories for CVE-2026-58293(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 10× in last 7d / 47× 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 392 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-58293?
CVE-2026-58293 is a high vulnerability published on July 3, 2026. External control of file name or path in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.
When was CVE-2026-58293 disclosed?
CVE-2026-58293 was first published on July 3, 2026, with the most recent update on October 8, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-58293 actively exploited?
CVE-2026-58293 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.6% probability of exploitation in the next 30 days (47th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-58293?
CVE-2026-58293 has a CVSS base score of 8.1 (the CNA's own assessment, by microsoft; NVD's own analysis pending).
How do I remediate CVE-2026-58293?
A fix for CVE-2026-58293 is referenced (a reference tagged "Patch", often a source commit), but EchelonGraph has no release containing it on record. Check that reference and the vendor's advisory for a release that contains the fix and update to it; until then, restrict network exposure of the affected system or apply the vendor's mitigation. The vendor advisories EchelonGraph has for CVE-2026-58293 are linked in the Vendor Advisories panel on this page.

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