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Mallory
HighPublic exploit

Use-After-Free in WebCodecs (Chrome <123.0.6312.86)

IdentifiersCVE-2024-2886CWE-416· Use After Free

CVE-2024-2886 is a use-after-free vulnerability in the WebCodecs component of Google Chrome prior to version 123.0.6312.86. The flaw allows a remote attacker to perform arbitrary read and write operations in the browser's memory by enticing a user to visit a specially crafted HTML page. This can lead to memory corruption and potentially enable code execution within the context of the browser process.

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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 allows a remote attacker to achieve arbitrary memory read and write, which can lead to browser sandbox escape, information disclosure, or remote code execution. The vulnerability is rated as high severity due to the potential for full compromise of the affected system if chained with other vulnerabilities.

Mitigation

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

As a temporary measure, restrict access to untrusted web content and disable JavaScript where feasible. Employ browser security features such as site isolation and sandboxing. Monitor for security updates and apply them promptly.

Remediation

Patch, then assume compromise.

Upgrade Google Chrome to version 123.0.6312.86 or later, where the vulnerability has been patched. Users and administrators should ensure automatic updates are enabled and verify that their browser is running the latest version.
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
Fedora ProjectFedoraoperating_system
GoogleChromeapplication

Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.

ACTIVITY FEED

Recent activity

1 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.

This page is what’s public. Mallory adds the parts that aren’t: which of your assets are affected, which adversaries are exploiting it right now, which detections to deploy, and what to do tonight.
Exposure mapping

Query your assets running an affected version, and investigate the blast radius.

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

YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.

Vendor-by-vendor mapping

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

Social activity

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