CVE-2026-58597

MEDIUMPre-NVD 4.34.3—
EchelonGraph scoreMEDIUM confidence

Score 4.3 from GitHub Security Advisory published 2026-07-03. The CNA's CVSS baseline 4.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:microsoft, epss, ghsa
Trending — 4 sources updated this week
4.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.7%CVSS: 4.3Exploit: 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).

Insufficient ui warning of dangerous operations in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform spoofing over a network.

CVSS v3
4.3
EG Score
4.3MEDIUMmedium confidence
EG Risk
20
EG Risk 20/100CISA 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
Severity43% × 45%
Exploitation1% × 40%
Automatability0% × 15%
CISA SSVC: Track at every mission impact level.
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
0.7%
EPSS %ILE
51st
KEV
Not listed

CISA SSVCTrack at every mission impact level.

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 partial (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 8, 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-2026-58597

Vendor Advisories for CVE-2026-58597(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 / 46× 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 299 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 19:13 UTCEG score recompute
  19. 2026-09-25 19:13 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. 2026-09-17 23:19 UTCEG score recompute
  4. 2026-09-17 23:19 UTCVendor advisory
  5. 2026-09-17 23:19 UTCGHSA enrichment
  6. 2026-09-17 19:31 UTCEPSS rescore
  7. 2026-09-16 14:08 UTCEPSS rescore
  8. 2026-09-16 05:15 UTCEPSS rescore
  9. 2026-09-15 03:11 UTCEPSS rescore
  10. 2026-09-14 09:36 UTCEG score recompute
  11. 2026-09-14 09:36 UTCVendor advisory
  12. 2026-09-14 09:36 UTCGHSA enrichment
  13. 2026-09-13 16:47 UTCEPSS rescore
  14. 2026-09-13 11:56 UTCEG score recompute
  15. 2026-09-13 11:56 UTCVendor advisory
  16. 2026-09-13 11:56 UTCGHSA enrichment
  17. 2026-09-12 13:53 UTCEG score recompute
  18. 2026-09-12 13:53 UTCVendor advisory
  19. 2026-09-12 13:53 UTCGHSA enrichment
  20. 2026-09-11 14:53 UTCEPSS rescore
  21. 2026-09-10 09:35 UTCEPSS rescore
  22. 2026-09-09 22:57 UTCGHSA enrichment
  23. 2026-09-08 22:54 UTCEG score recompute
  24. 2026-09-08 22:54 UTCVendor advisory
  25. 2026-09-08 22:54 UTCGHSA enrichment
  26. 2026-09-08 22:01 UTCEPSS rescore
  27. 2026-09-07 16:01 UTCEPSS rescore
  28. 2026-09-06 13:47 UTCEPSS rescore
  29. 2026-09-05 23:38 UTCEG score recompute
  30. 2026-09-05 23:38 UTCVendor advisory
  31. 2026-09-05 23:38 UTCGHSA enrichment
  32. 2026-09-04 23:24 UTCEG score recompute
  33. 2026-09-04 23:24 UTCVendor advisory
  34. 2026-09-04 23:24 UTCGHSA enrichment
  35. 2026-09-04 05:07 UTCEPSS rescore
  36. 2026-09-02 19:58 UTCEG score recompute
  37. 2026-09-02 19:58 UTCVendor advisory
  38. 2026-09-02 19:58 UTCGHSA enrichment
  39. 2026-09-02 14:12 UTCEPSS rescore
  40. 2026-09-01 13:54 UTCEPSS rescore
  41. 2026-09-01 04:40 UTCEPSS rescore
  42. 2026-08-31 16:17 UTCEG score recompute
  43. 2026-08-31 16:17 UTCVendor advisory
  44. 2026-08-31 16:17 UTCGHSA enrichment
  45. 2026-08-30 19:17 UTCEPSS rescore
  46. 2026-08-30 11:16 UTCEG score recompute
  47. 2026-08-30 11:16 UTCVendor advisory
  48. 2026-08-30 11:16 UTCGHSA enrichment
  49. 2026-08-30 01:22 UTCEPSS rescore
  50. 2026-08-28 23:41 UTCEG score recompute
  51. 2026-08-28 23:41 UTCVendor advisory
  52. 2026-08-28 23:40 UTCGHSA enrichment
  53. 2026-08-28 21:42 UTCEPSS rescore
  54. 2026-08-27 22:10 UTCEG score recompute
  55. 2026-08-27 22:10 UTCVendor advisory
  56. 2026-08-27 22:10 UTCGHSA enrichment
  57. 2026-08-27 14:25 UTCEPSS rescore
  58. 2026-08-26 14:46 UTCEPSS rescore
  59. 2026-08-26 14:29 UTCEG score recompute
  60. 2026-08-26 14:29 UTCGHSA enrichment
  61. 2026-08-25 13:49 UTCEPSS rescore
  62. 2026-08-24 21:27 UTCEG score recompute
  63. 2026-08-24 21:27 UTCVendor advisory
  64. 2026-08-24 21:27 UTCGHSA enrichment
  65. 2026-08-24 10:11 UTCEG score recompute
  66. 2026-08-24 10:11 UTCVendor advisory
  67. 2026-08-24 10:11 UTCGHSA enrichment
  68. 2026-08-23 10:26 UTCEG score recompute
  69. 2026-08-23 10:26 UTCVendor advisory
  70. 2026-08-23 10:26 UTCGHSA enrichment
  71. 2026-08-23 00:19 UTCEPSS rescore
  72. 2026-08-22 12:44 UTCEG score recompute
  73. 2026-08-22 12:44 UTCVendor advisory
  74. 2026-08-22 12:44 UTCGHSA enrichment
  75. 2026-08-21 23:49 UTCEPSS rescore

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-58597?
CVE-2026-58597 is a medium vulnerability published on July 3, 2026. Insufficient ui warning of dangerous operations in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform spoofing over a network.
When was CVE-2026-58597 disclosed?
CVE-2026-58597 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-2026-58597 actively exploited?
CVE-2026-58597 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.7% probability of exploitation in the next 30 days (51st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-58597?
CVE-2026-58597 has a CVSS base score of 4.3 (the CNA's own assessment, by microsoft; NVD's own analysis pending).
How do I remediate CVE-2026-58597?
A fix for CVE-2026-58597 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-2026-58597 are linked in the Vendor Advisories panel on this page.

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