CVE-2026-58525

HIGHPre-NVD 8.28.2—
EchelonGraph scoreHIGH confidence

Score 8.2 from GitHub Security Advisory (severity: HIGH) published 2026-07-08. the CNA's CVSS baseline 8.2; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:microsoft, epss, ghsa
Trending — 4 sources updated this week
8.2
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 8.2Exploit: NoneExposed: 0

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

Improper access control in Microsoft Edge (Chromium-based) allows an unauthorized attacker to bypass a security feature over a network.

CVSS v3
8.2
EG Score
8.2(high)
EPSS
28.4%
KEV
Not listed

Published

July 8, 2026

Last Modified

July 15, 2026

Advisory Details (1)

Auto-updated Jul 8, 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-2026-58525

Vendor Advisories for CVE-2026-58525(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 53× in last 7d / 56× 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. 2026-07-15 16:57 UTCEPSS rescore
  2. 2026-07-15 16:57 UTCEPSS rescore
  3. 2026-07-15 16:50 UTCEG score recompute
  4. 2026-07-15 16:50 UTCVendor advisory
  5. 2026-07-15 16:50 UTCGHSA enrichment
  6. 2026-07-15 05:09 UTCEG score recompute
  7. 2026-07-15 05:09 UTCVendor advisory
  8. 2026-07-15 05:09 UTCGHSA enrichment
  9. 2026-07-15 02:00 UTCEPSS rescore
  10. 2026-07-15 02:00 UTCEPSS rescore
  11. 2026-07-14 17:28 UTCEG score recompute
  12. 2026-07-14 17:28 UTCVendor advisory
  13. 2026-07-14 17:28 UTCGHSA enrichment
  14. 2026-07-14 05:48 UTCEG score recompute
  15. 2026-07-14 05:48 UTCVendor advisory
  16. 2026-07-14 05:48 UTCGHSA enrichment
  17. 2026-07-13 22:31 UTCEPSS rescore
  18. 2026-07-13 18:08 UTCEG score recompute
  19. 2026-07-13 18:08 UTCGHSA enrichment
  20. 2026-07-13 06:25 UTCEG score recompute
  21. 2026-07-13 06:25 UTCVendor advisory
  22. 2026-07-13 06:25 UTCGHSA enrichment
  23. 2026-07-13 06:13 UTCEPSS rescore
  24. 2026-07-13 06:13 UTCEPSS rescore
  25. 2026-07-12 18:43 UTCEG score recompute
Show 31 more
  1. 2026-07-12 18:43 UTCVendor advisory
  2. 2026-07-12 18:43 UTCGHSA enrichment
  3. 2026-07-12 07:02 UTCEG score recompute
  4. 2026-07-12 07:02 UTCVendor advisory
  5. 2026-07-12 07:02 UTCGHSA enrichment
  6. 2026-07-12 05:46 UTCEPSS rescore
  7. 2026-07-11 19:21 UTCEG score recompute
  8. 2026-07-11 19:21 UTCVendor advisory
  9. 2026-07-11 19:21 UTCGHSA enrichment
  10. 2026-07-11 08:27 UTCEPSS rescore
  11. 2026-07-11 08:27 UTCEPSS rescore
  12. 2026-07-11 07:40 UTCEG score recompute
  13. 2026-07-11 07:40 UTCVendor advisory
  14. 2026-07-11 07:40 UTCGHSA enrichment
  15. 2026-07-10 19:59 UTCEG score recompute
  16. 2026-07-10 19:59 UTCVendor advisory
  17. 2026-07-10 19:59 UTCGHSA enrichment
  18. 2026-07-10 08:19 UTCEG score recompute
  19. 2026-07-10 08:19 UTCVendor advisory
  20. 2026-07-10 08:19 UTCGHSA enrichment
  21. 2026-07-09 20:36 UTCEG score recompute
  22. 2026-07-09 20:36 UTCVendor advisory
  23. 2026-07-09 20:36 UTCGHSA enrichment
  24. 2026-07-09 19:10 UTCEPSS rescore
  25. 2026-07-09 19:10 UTCEPSS rescore
  26. 2026-07-09 08:55 UTCEG score recompute
  27. 2026-07-09 08:55 UTCVendor advisory
  28. 2026-07-09 08:55 UTCGHSA enrichment
  29. 2026-07-08 21:13 UTCEG score recompute
  30. 2026-07-08 21:13 UTCVendor advisory
  31. 2026-07-08 21:10 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-58525?
CVE-2026-58525 is a high vulnerability published on July 8, 2026. Improper access control in Microsoft Edge (Chromium-based) allows an unauthorized attacker to bypass a security feature over a network.
When was CVE-2026-58525 disclosed?
CVE-2026-58525 was first published in the National Vulnerability Database on July 8, 2026, with the most recent update on July 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-58525 actively exploited?
CVE-2026-58525 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 28.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-58525?
CVE-2026-58525 has a CVSS v4.0 base score of 8.2 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-58525?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-58525, 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

Explore the affected products and dependency analysis for CVE-2026-58525

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