CVE-2026-58297 Microsoft CVE debrief

Who should care

Users of Microsoft Edge for Android, security teams, and IT administrators responsible for managing and updating software on Android devices should prioritize updating to the latest version to mitigate the risk of private personal information exposure. This vulnerability may impact organizations that use Microsoft Edge for Android for browsing or other activities that involve sensitive information.

Technical summary

The vulnerability CVE-2026-58297 involves the exposure of private personal information to an unauthorized actor in Microsoft Edge for Android. This allows an unauthorized attacker to disclose information over a network. The CVSS score for this vulnerability is 7.1, indicating a high severity level. The vulnerability is described as occurring in Microsoft Edge for Android, with a CVSS vector of CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N.

Defensive priority

High priority should be given to updating Microsoft Edge for Android to prevent potential information disclosure. Security teams should review and enforce secure network communication protocols, monitor for suspicious activity, and verify that compensating controls are in place for exposed systems.

Recommended defensive actions

• Update Microsoft Edge for Android to the latest version
• Review and enforce secure network communication protocols
• Monitor for any suspicious activity related to information disclosure
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review

Evidence notes

The CVE record and NVD detail provide information on the vulnerability. The vendor advisory from Microsoft provides mitigation details. Evidence is limited to public sources and may not reflect the full scope or impact of the vulnerability. Defenders should verify affected systems and apply updates or mitigations as recommended by the vendor. Additional information may be available through internal or private channels.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.