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Privilege Escalation in WebView in Google Chrome on Android

IdentifiersCVE-2026-12448CWE-284

CVE-2026-12448 is a high-severity privilege escalation vulnerability caused by an inappropriate implementation in WebView in Google Chrome on Android prior to version 149.0.7827.155. According to the provided content, a remote attacker can trigger the issue by supplying a crafted HTML page. The available information does not identify the specific vulnerable function or code path, but it indicates the flaw resides in WebView’s implementation and can be reached through malicious web content rendered on affected Android Chrome/WebView components.

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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 privilege escalation on an affected Android device through crafted HTML content. The provided content does not further specify the exact post-exploitation privilege boundary crossed, but the issue is rated High severity by Chromium and could enable bypass of intended security restrictions and facilitate further compromise.

Mitigation

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

No specific workaround or temporary mitigation is provided in the supplied content. Until patching is completed, reduce exposure by limiting use of untrusted web content on affected Android devices and prioritizing rapid deployment of the fixed browser/WebView version.

Remediation

Patch, then assume compromise.

Upgrade Google Chrome on Android to version 149.0.7827.155 or later. Where Chromium packages are consumed through Debian, apply the vendor-fixed packages referenced in the advisory: 149.0.7827.155-1~deb13u1 for Debian stable (trixie) and 149.0.7827.155-1~deb12u1 for Debian oldstable (bookworm).
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.

ACTIVITY FEED

Recent activity

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

4 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-2026-12448
NVD
nvd.nist.gov/vuln/detail/CVE-2026-12448
MITRE CWE · CWE-284
cwe.mitre.org