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High

Out-of-bounds write in V8 in Google Chrome

IdentifiersCVE-2026-11173CWE-787· Out-of-bounds Write

CVE-2026-11173 is an out-of-bounds write vulnerability in the V8 JavaScript engine in Google Chrome prior to 149.0.7827.53. According to the provided description, a remote attacker who has already compromised the renderer process can trigger the flaw using a crafted HTML page and achieve arbitrary code execution inside the Chrome sandbox. The issue affects Chrome/Chromium builds before the fixed 149.0.7827.53 release.

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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 arbitrary code execution within the context of the Chrome sandbox. Based on the provided advisory material, this can result in high impact to confidentiality, integrity, and availability within the sandboxed process context, but the provided information does not indicate a sandbox escape or direct host-level code execution from this vulnerability alone.

Mitigation

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

No specific workaround or temporary mitigation is provided in the supplied content. The practical mitigation is to apply the vendor update. Where immediate patching is not possible, reducing exposure to untrusted web content may lower risk, but this is not a vendor-stated fix.

Remediation

Patch, then assume compromise.

Upgrade Google Chrome or Chromium to version 149.0.7827.53 or later. For Debian chromium packages, upgrade to the vendor-fixed builds identified in the advisory: bookworm (oldstable) to 149.0.7827.53-1~deb12u1 or trixie (stable) to 149.0.7827.53-1~deb13u1.
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

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

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 activity2

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