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Privilege Escalation in Google Chrome Cast

IdentifiersCVE-2026-11241CWE-20· Improper Input Validation

CVE-2026-11241 is an insufficient validation of untrusted input vulnerability in the Cast component of Google Chrome affecting versions prior to 149.0.7827.53. According to the provided record, a crafted HTML page can trigger the flaw when accessed in an environment where the attacker is present on the same local network segment. The issue is classified as CWE-20. Successful exploitation can result in privilege escalation. Chromium rated the issue with Low security severity.

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For your environment

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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 an attacker on the local network segment to achieve privilege escalation through a crafted HTML page. The supplied CVSS v3.1 vector (AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H) further indicates adjacent-network attack conditions, no privileges required, user interaction required, and potentially high impact to confidentiality, integrity, and availability.

Mitigation

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

No specific workaround was provided in the supplied content. Mitigation is to apply the vendor updates promptly. Until patched, reduce exposure by limiting attacker presence on the same local network segment and avoiding interaction with untrusted or attacker-supplied HTML content.

Remediation

Patch, then assume compromise.

Upgrade Google Chrome to version 149.0.7827.53 or later. For Microsoft Edge (Chromium-based), upgrade to version 149.0.4022.52 or later, which incorporates the Chromium fix. Debian users should update chromium to the vendor-fixed package versions, including 149.0.7827.53-1~deb12u1 for bookworm and 149.0.7827.53-1~deb13u1 for trixie, as applicable.
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.