CVE-2026-58616

MEDIUMNVD 3.04.4▲
EchelonGraph scoreMEDIUM confidence

Score 4.4 from GitHub Security Advisory published 2026-08-28. NVD baseline CVSS 3.0; sources differ by 1.4.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 4 sources updated this week
4.4EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 3.0Exploit: None knownExposed: 0

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

Concurrent execution using shared resource with improper synchronization ('race condition') in Copilot Chat (Microsoft Edge) allows an authorized attacker to disclose information over a network.

CVSS v3
3.0
EG Score
4.4(medium)
EG Risk
20(Track)
EG Risk 20/100SSVC: 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
Severity44% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
13%
KEV
Not listed

Published

August 28, 2026

Last Modified

September 16, 2026

Advisory Details (1)

Auto-updated Aug 28, 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-2026-58616

Vendor Advisories for CVE-2026-58616(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 29× in last 7d / 104× 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 104 total refreshes for this CVE.

  1. 2026-09-20 20:42 UTCEG score recompute
  2. 2026-09-20 20:42 UTCVendor advisory
  3. 2026-09-20 20:42 UTCGHSA enrichment
  4. 2026-09-20 20:16 UTCEPSS rescore
  5. 2026-09-19 21:05 UTCEG score recompute
  6. 2026-09-19 21:05 UTCVendor advisory
  7. 2026-09-19 21:05 UTCGHSA enrichment
  8. 2026-09-18 21:28 UTCEG score recompute
  9. 2026-09-18 21:28 UTCVendor advisory
  10. 2026-09-18 21:28 UTCGHSA enrichment
  11. 2026-09-18 19:28 UTCEPSS rescore
  12. 2026-09-17 20:50 UTCEG score recompute
  13. 2026-09-17 20:50 UTCVendor advisory
  14. 2026-09-17 20:50 UTCGHSA enrichment
  15. 2026-09-17 19:31 UTCEPSS rescore
  16. 2026-09-16 16:57 UTCEG score recompute
  17. 2026-09-16 16:57 UTCVendor advisory
  18. 2026-09-16 16:57 UTCGHSA enrichment
  19. 2026-09-16 14:08 UTCEPSS rescore
  20. 2026-09-16 05:15 UTCEPSS rescore
  21. 2026-09-15 17:30 UTCEG score recompute
  22. 2026-09-15 17:30 UTCVendor advisory
  23. 2026-09-15 17:30 UTCGHSA enrichment
  24. 2026-09-15 03:11 UTCEPSS rescore
  25. 2026-09-14 17:54 UTCVendor advisory
Show 75 more
  1. 2026-09-14 17:54 UTCGHSA enrichment
  2. 2026-09-14 16:20 UTCEG score recompute
  3. 2026-09-14 16:20 UTCVendor advisory
  4. 2026-09-14 16:20 UTCGHSA enrichment
  5. 2026-09-13 16:47 UTCEPSS rescore
  6. 2026-09-13 16:44 UTCVendor advisory
  7. 2026-09-13 16:44 UTCGHSA enrichment
  8. 2026-09-12 17:08 UTCEG score recompute
  9. 2026-09-12 17:08 UTCVendor advisory
  10. 2026-09-12 17:08 UTCGHSA enrichment
  11. 2026-09-11 17:32 UTCVendor advisory
  12. 2026-09-11 17:32 UTCGHSA enrichment
  13. 2026-09-11 17:13 UTCEG score recompute
  14. 2026-09-11 17:13 UTCVendor advisory
  15. 2026-09-11 17:13 UTCGHSA enrichment
  16. 2026-09-11 14:53 UTCEPSS rescore
  17. 2026-09-10 23:58 UTCEG score recompute
  18. 2026-09-10 23:58 UTCGHSA enrichment
  19. 2026-09-10 09:35 UTCEPSS rescore
  20. 2026-09-10 00:02 UTCGHSA enrichment
  21. 2026-09-09 00:27 UTCEG score recompute
  22. 2026-09-09 00:27 UTCVendor advisory
  23. 2026-09-09 00:27 UTCGHSA enrichment
  24. 2026-09-08 22:01 UTCEPSS rescore
  25. 2026-09-07 19:57 UTCEG score recompute
  26. 2026-09-07 19:57 UTCVendor advisory
  27. 2026-09-07 19:57 UTCGHSA enrichment
  28. 2026-09-07 16:01 UTCEPSS rescore
  29. 2026-09-06 20:22 UTCEG score recompute
  30. 2026-09-06 20:22 UTCVendor advisory
  31. 2026-09-06 20:22 UTCGHSA enrichment
  32. 2026-09-06 13:47 UTCEPSS rescore
  33. 2026-09-05 20:42 UTCEG score recompute
  34. 2026-09-05 20:42 UTCVendor advisory
  35. 2026-09-05 20:42 UTCGHSA enrichment
  36. 2026-09-04 21:07 UTCEG score recompute
  37. 2026-09-04 21:07 UTCVendor advisory
  38. 2026-09-04 21:07 UTCGHSA enrichment
  39. 2026-09-04 05:07 UTCEPSS rescore
  40. 2026-09-03 21:31 UTCVendor advisory
  41. 2026-09-03 21:31 UTCGHSA enrichment
  42. 2026-09-03 15:35 UTCVendor advisory
  43. 2026-09-03 15:35 UTCGHSA enrichment
  44. 2026-09-02 18:53 UTCGHSA enrichment
  45. 2026-09-02 18:06 UTCVendor advisory
  46. 2026-09-02 18:06 UTCGHSA enrichment
  47. 2026-09-02 17:24 UTCVendor advisory
  48. 2026-09-02 17:24 UTCGHSA enrichment
  49. 2026-09-02 14:46 UTCEG score recompute
  50. 2026-09-02 14:46 UTCVendor advisory
  51. 2026-09-02 14:46 UTCGHSA enrichment
  52. 2026-09-02 14:12 UTCEPSS rescore
  53. 2026-09-01 15:08 UTCEG score recompute
  54. 2026-09-01 15:08 UTCVendor advisory
  55. 2026-09-01 15:08 UTCGHSA enrichment
  56. 2026-09-01 13:54 UTCEPSS rescore
  57. 2026-09-01 04:40 UTCEPSS rescore
  58. 2026-08-31 15:30 UTCEG score recompute
  59. 2026-08-31 15:30 UTCVendor advisory
  60. 2026-08-31 15:30 UTCGHSA enrichment
  61. 2026-08-31 15:20 UTCNVD updateCVSS v3 → 3 · severity → LOW
  62. 2026-08-30 19:17 UTCEPSS rescore
  63. 2026-08-30 16:12 UTCEG score recompute
  64. 2026-08-30 16:12 UTCVendor advisory
  65. 2026-08-30 16:12 UTCGHSA enrichment
  66. 2026-08-30 01:22 UTCEPSS rescore
  67. 2026-08-29 16:36 UTCEG score recompute
  68. 2026-08-29 16:36 UTCVendor advisory
  69. 2026-08-29 16:36 UTCGHSA enrichment
  70. 2026-08-28 22:45 UTCVendor advisory
  71. 2026-08-28 22:44 UTCGHSA enrichment
  72. 2026-08-28 21:38 UTCEG score recompute
  73. 2026-08-28 21:38 UTCVendor advisory
  74. 2026-08-28 21:38 UTCGHSA enrichment
  75. 2026-08-28 20:25 UTCEG score recompute

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-58616?
CVE-2026-58616 is a medium vulnerability published on August 28, 2026. Concurrent execution using shared resource with improper synchronization ('race condition') in Copilot Chat (Microsoft Edge) allows an authorized attacker to disclose information over a network.
When was CVE-2026-58616 disclosed?
CVE-2026-58616 was first published in the National Vulnerability Database on August 28, 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-2026-58616 actively exploited?
CVE-2026-58616 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 87.1% of all scored CVEs.
What is the CVSS score of CVE-2026-58616?
CVE-2026-58616 has a CVSS v3 base score of 3.0 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 4.4.
How do I remediate CVE-2026-58616?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-58616, 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-2026-58616

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