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CVE-2026-12454 is a high-severity race condition in the Safe Browsing component of Google Chrome on macOS prior to version 149.0.7827.155. The flaw can be triggered through a crafted HTML page and is exploitable by a remote attacker who has already compromised the renderer process. Under those conditions, the race may allow the attacker to cross intended process isolation boundaries and escape Chrome’s sandbox. The issue affects Chromium-derived browsers that incorporated the vulnerable code until they rebased to a fixed Chromium version.
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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.
9 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A high-severity race condition vulnerability in Chrome's Safe Browsing component.
A high-severity race condition vulnerability in Chrome Safe Browsing.
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.