CVE-2026-58616 json
Copilot Chat (Microsoft Edge) Information Disclosure Vulnerability
published 2mo ago modified yesterday also EUVD-2026-67847
- cvss
- 4.4
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 22%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- Microsoft Microsoft Edge (Chromium-based) 152.0.4191.53
- Microsoft Microsoft Edge for Android 152.0.4191.52
- Microsoft Microsoft Edge for iOS 152.0.4191.52
- Microsoft Microsoft Edge for Linux 152.0.4191.52
- Microsoft Microsoft Edge for MAC 152.0.4191.52
- Microsoft Microsoft Edge for Windows 152.0.4191.52
Is CVE-2026-58616 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 2mo ago
Exploit prediction
0.30% chance of exploitation in the next 30 days, higher than 22% of all scored CVEs (FIRST EPSS, 2026-11-11).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 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 |
| CNA | 3.1 | 4.4 | CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N |
| NVD | 3.1 | 3.0 | CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:N/A:N |
Affected products
- Microsoft Microsoft Edge (Chromium-based)
- Microsoft Microsoft Edge for Android
- Microsoft Microsoft Edge for iOS
- Microsoft Microsoft Edge for Linux
- Microsoft Microsoft Edge for MAC
- Microsoft Microsoft Edge for Windows
Classification
- Weakness
-
- CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization
References
-
msrc.microsoft.com
/update-guide/vulnerability/CVE-2026-58616
vendor-advisory, patch
Sources
- CVE List CVE-2026-58616
- NVD CVE-2026-58616
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.