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CVE-2026-13033 is a critical out-of-bounds read vulnerability in the Blink InterestGroups component of Google Chrome. The flaw affects Chrome versions prior to 149.0.7827.197 and is reachable through crafted HTML content processed by the browser. InterestGroups is part of Blink functionality associated with the Privacy Sandbox and Protected Audience advertising auction mechanism. The vulnerability allows memory to be read outside the intended bounds of an object or buffer, which can expose adjacent memory contents. Available vendor and downstream advisory language also associates this issue with arbitrary code execution via a crafted HTML page, indicating that the memory-safety flaw may be exploitable beyond information disclosure in some circumstances.
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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.
9 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A critical out-of-bounds read vulnerability in Blink's InterestGroups component in Chrome.
A critical out-of-bounds read vulnerability in Blink's InterestGroups component that can leak adjacent memory contents to a malicious page.
A critical out-of-bounds read vulnerability in Chrome Blink InterestGroups.
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.