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CVE-2026-12440 is a critical use-after-free vulnerability in the Digital Credentials component of Google Chrome on Windows prior to version 149.0.7827.155. The flaw can be triggered by a remote attacker through a crafted HTML page, causing memory to be accessed after it has been freed. In a browser context, this class of memory-safety error can corrupt process memory and destabilize control flow. Available reporting indicates the vulnerability could be used to potentially achieve a sandbox escape.
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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.
If you can’t patch tonight, do this now.
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.
11 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A high-severity use-after-free vulnerability in Google Chrome's Digital Credentials component that could allow a security bypass.
A critical use-after-free vulnerability in Chrome's Digital Credentials component that could allow arbitrary code execution in the browser context.
A critical Chrome vulnerability affecting Digital Credentials, discussed as part of a set of severe browser bugs with potentially serious impact if chained.
A critical use-after-free vulnerability in Chrome DigitalCredentials.
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.