CVE-2026-58616

🔶 medium

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.

CVSS Score

4.4

Medium

EPSS Score

0.2

Exploit Probability

Published Date

2026-08-28

First Seen: 2026-08-29

📊 Relative Risk Intelligence

This CVE is Lower Risk - more severe than 11.4% of all 365,890 vulnerabilities in our database.

#324,307

Below average severity

Severity Percentile

🎯 CISA SSVC Assessment Updated: Aug 28, 2026

🔍 Exploitation Status

None

No known exploits

⚙️ Automatable

Requires human interaction

💥 Technical Impact

Partial

Limited system impact

SSVC data provided by CISA

Last Modified 2026-09-11

Source NVD 🔗

CVSS Vector 3.1 CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N

CWE IDs (Weakness Types)

CWE-362

📦 Affected Products 1

Vendor	Product	Status	Affected Versions
microsoft	edge_chromium	Affected	< 152.0.4191.53

🔗 References 1

https://msrc.microsoft.com/update-guide/vulnerabilit...

Vendor Advisory

🔗 Related CVEs 6

CVE ID	Severity	CVSS	EPSS	Summary	Published
CVE-2026-88097	⚠️ high	8.1	0.3	Use after free in Microsoft Edge (Chromium-based) allows an unauthorized attacker to elevate privileges locally.	2026-09-18
CVE-2026-69486	⚠️ high	8.8	0.8	Heap-based buffer overflow in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a net...	2026-09-15
CVE-2026-85893	⚠️ high	8.8	0.8	Use after free in Microsoft Edge (Chromium-based) allows an unauthorized attacker to elevate privileges over a network.	2026-09-15
CVE-2026-85892	⚠️ high	7.8	0.2	Concurrent execution using shared resource with improper synchronization ('race condition') in Microsoft Edge (Chromium-...	2026-09-14
CVE-2026-70341	⚠️ high	8.5	0.6	Use after free in Microsoft Edge (Chromium-based) allows an authorized attacker to execute code over a network.	2026-09-11
CVE-2026-77490	🔶 medium	6.1	0.4	Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Edge (Chromium-based) ...	2026-09-11

These CVEs affect the same products