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Mallory
Medium

Out-of-bounds Read in Google Chrome VideoCapture

IdentifiersCVE-2026-12033CWE-125· Out-of-bounds Read

CVE-2026-12033 is a high-severity out-of-bounds read vulnerability in the VideoCapture component of Google Chrome prior to version 149.0.7827.115. According to the provided advisory text, a remote attacker could trigger the flaw via a crafted HTML page, but exploitation additionally required that the attacker had already compromised the GPU process. The bug allows memory to be read beyond intended bounds within VideoCapture, creating an information disclosure condition that can expose process memory contents.

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ANALYST BRIEF

Impact, mitigation & remediation

What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.

Impact

What an attacker gets, and what they’ve been doing with it.

Successful exploitation can disclose potentially sensitive information from process memory. Based on the provided description, the vulnerability does not by itself provide initial code execution; rather, it can be used by an attacker who has already compromised the GPU process to read unintended memory and obtain data that may aid further exploitation, sandbox escape chains, or theft of sensitive in-memory information.

Mitigation

If you can’t patch tonight, do this now.

No specific workaround or temporary mitigation was provided in the supplied advisories. The practical mitigation is to apply the relevant Chrome/Chromium security update promptly. Reducing exposure to untrusted web content may lower risk, but patching is the primary mitigation supported by the provided information.

Remediation

Patch, then assume compromise.

Upgrade Google Chrome to version 149.0.7827.115 or later. For Debian-based Chromium deployments, apply the vendor security updates referenced in the provided content, including chromium 149.0.7827.114-1~deb12u1 for Debian oldstable (bookworm) or 149.0.7827.114-1~deb13u1 for Debian stable (trixie).
PUBLIC EXPLOITS

Exploits

No public exploits tracked yet. Mallory keeps watching.

VALID 0 / 0 TOTALView more in app

No public exploit code observed for this vulnerability.

EXPOSURE SURFACE

Affected products & vendors

Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.

VendorProductType
GoogleChromeapplication

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ACTIVITY FEED

Recent activity

2 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.

What this page doesn’t show

The version that knows your environment.

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Exposure mapping

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Threat actor evidence

Every observed campaign linking this CVE to a named adversary.

Associated malware

Malware families riding this exploit, with evidence and IOCs.

Detection signatures

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Vendor-by-vendor mapping

Cross-references every affected SKU, including bundled OEM variants.

Social activity

Community discussion across Reddit, Mastodon, and other social sources.