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CVE-2026-58281 is a remote code execution vulnerability in Microsoft Edge (Chromium-based) caused by deserialization of untrusted data. The flaw affects Edge versions prior to 150.0.4078.48. An attacker can deliver specially crafted content to the browser and, if the target processes that content through the vulnerable code path, achieve code execution in the context of Microsoft Edge. Available scoring information indicates network attackability, no requirement for prior authentication, and required user interaction, consistent with exploitation through malicious web content or a crafted file opened by the user.
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What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
14 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A remote code execution vulnerability in Microsoft Edge (Chromium-based) caused by improper deserialization of untrusted data, allowing arbitrary code execution if a user visits a malicious website or opens attacker-controlled content.
A remote code execution vulnerability caused by deserialization of untrusted data in Microsoft Edge (Chromium-based).
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.