CVE-2026-58616
lowpriority · track · 12EPSS 0.003 · 22 %ileUSEPSS · scored 2026-10-27
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.
remediations
Vendor fix, mitigation, or workaround guidance, as published by each source.
A vendor fix is available.
- FixedMicrosoft Edge for Androidmsrc_csaf
152.0.4191.52:Security Update:https://learn.microsoft.com/en-us/DeployEdge/microsoft-edge-relnotes-security
https://learn.microsoft.com/en-us/DeployEdge/microsoft-edge-relnotes-security - FixedMicrosoft Edge for Linuxmsrc_csaf
152.0.4191.52:Security Update:https://learn.microsoft.com/en-us/DeployEdge/microsoft-edge-relnotes-security
https://learn.microsoft.com/en-us/DeployEdge/microsoft-edge-relnotes-security - FixedMicrosoft Edge for MACmsrc_csaf
152.0.4191.52:Security Update:https://learn.microsoft.com/en-us/DeployEdge/microsoft-edge-relnotes-security
https://learn.microsoft.com/en-us/DeployEdge/microsoft-edge-relnotes-security - FixedMicrosoft Edge for Windowsmsrc_csaf
152.0.4191.52:Security Update:https://learn.microsoft.com/en-us/DeployEdge/microsoft-edge-relnotes-security
https://learn.microsoft.com/en-us/DeployEdge/microsoft-edge-relnotes-security - FixedMicrosoft Edge for iOSmsrc_csaf
152.0.4191.52:Security Update:https://learn.microsoft.com/en-us/DeployEdge/microsoft-edge-relnotes-security
https://learn.microsoft.com/en-us/DeployEdge/microsoft-edge-relnotes-security
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–medium · 2.8–4.4
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (11)
Products and version ranges known to be affected.
advisories (1)
Vendor and ecosystem advisories describing this.
- msrc_CVE-2026-58616Copilot Chat (Microsoft Edge) Information Disclosure Vulnerability2026-08-28csaf · msrc_csafUS
To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle
sources
Which sources assert this record, and when.
references (1) nvd
External citations — patches, advisories, analysis.
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