# CVE-2026-58616

## Summary

- **CVE ID:** CVE-2026-58616
- **Severity:** MEDIUM
- **CVSS Score:** 4.4 (CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C)
- **CWE:** CWE-362
- **Published:** Aug 28, 2026
- **Last Modified:** Sep 16, 2026

## Description

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.

## Affected Products

- Microsoft — Microsoft Edge (Chromium-based) (1.0.0.0)
- Microsoft — Microsoft Edge (Chromium-based) (-)
- Microsoft — Microsoft Edge for Android (1.0.0.0)
- Microsoft — Microsoft Edge for iOS (1.0.0.0)
- Microsoft — Microsoft Edge for Linux (1.0.0)
- Microsoft — Microsoft Edge for MAC (1.0.0.0)
- Microsoft — Microsoft Edge for Windows (1.0.0.0)

## References

- [CNA](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58616)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.22%
- **EPSS Percentile:** 12.8

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-17._