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Out-of-bounds Read in Google Chrome Chromoting

IdentifiersCVE-2026-12444CWE-125

CVE-2026-12444 is a high-severity out-of-bounds read vulnerability in the Chromoting component of Google Chrome on Windows prior to version 149.0.7827.155. The flaw allows a local attacker to trigger an out-of-bounds memory read via a malicious file, resulting in disclosure of potentially sensitive information from process memory. The available advisories do not identify the specific vulnerable function or code path beyond the affected component being Chromoting.

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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 disclosure of process memory contents to a local attacker. This may expose sensitive information resident in Chrome process memory, potentially including application data, tokens, pointers, or other memory-resident material useful for further exploitation or chaining with other vulnerabilities. The provided sources characterize the issue as information disclosure rather than direct code execution.

Mitigation

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

No specific workaround or temporary mitigation is provided in the cited advisories. Practical mitigation is to apply the vendor updates promptly. Until patching is completed, reduce exposure by limiting local attacker access and avoiding processing untrusted files in affected environments.

Remediation

Patch, then assume compromise.

Upgrade Google Chrome on Windows to version 149.0.7827.155 or later. For Chromium on Debian, upgrade to the vendor-fixed packages: 149.0.7827.155-1~deb13u1 for Debian stable (trixie) or 149.0.7827.155-1~deb12u1 for Debian oldstable (bookworm). For Microsoft Edge (Chromium-based), upgrade to version 149.0.4022.80 or later, which incorporates the upstream Chromium fix.
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
Microsoft CorporationEdgeapplication

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

ACTIVITY FEED

Recent activity

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

5 SOURCESView more in app
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.
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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.

EXTERNAL REFERENCES
MITRE CVE
cve.org · CVE-2026-12444
NVD
nvd.nist.gov/vuln/detail/CVE-2026-12444
MITRE CWE · CWE-125
cwe.mitre.org