CVE-2026-58291

VendormicrosoftProductedge chromiumDiscoveredJul 3, 2026UpdatedOct 25, 2026

Operation on a resource after expiration or release in Microsoft Edge (Chromium-based) allows an unauthorized attacker to disclose information over a network.

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CVSS v3.1

6.1 MEDIUM

EPSS

0.99%

probability of exploitation in 30 days

CISA KEV

Not listed

no confirmed exploitation reported

News coverage

sources referencing this CVE

Related IOCs

seen in the same coverage

Intelligence Reports1

1 intelligence report available

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CVSS v3.1 Detail

Attack VectorNETWORK

Attack ComplexityHIGH

Privileges RequiredNONE

User InteractionREQUIRED

ScopeCHANGED

ConfidentialityHIGH

IntegrityNONE

AvailabilityNONE

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

Connections

2 relationships

CWE-672

source

Timeline

disclosure → media coverage

Jul 3, 2026

Disclosure — published as a CVE record. · last revised by NVD Oct 25, 2026