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Use-after-free in Downloads in Google Chrome on Android

IdentifiersCVE-2026-12452CWE-416

CVE-2026-12452 is a high-severity use-after-free vulnerability in the Downloads component of Google Chrome on Android prior to version 149.0.7827.155. According to the provided content, a remote attacker could trigger the flaw via a crafted HTML page, leading to heap corruption. The issue is described as a memory-lifetime error in Downloads where freed memory may be accessed after release, creating a corruption primitive that may be exploitable depending on heap state and exploit reliability.

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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 can cause heap corruption in Chrome on Android. Based on the provided advisories and context, this could potentially be leveraged for arbitrary code execution in the browser context, and may also result in application compromise or denial of service through browser crash. Broader Chromium advisory context indicates memory-corruption issues of this class can contribute to exploit chains and, in some cases, further compromise when combined with other vulnerabilities.

Mitigation

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

No specific workaround is provided in the supplied advisories beyond updating. Until patching is completed, reduce exposure by limiting access to untrusted web content on affected Android Chrome installations and prioritizing rapid browser updates through managed mobile device or enterprise update channels where applicable.

Remediation

Patch, then assume compromise.

Upgrade Google Chrome on Android to version 149.0.7827.155 or later. For downstream Chromium-based products, apply the corresponding vendor fixes. The provided content also indicates Microsoft Edge is fixed in version 149.0.4022.80 or later, and Debian Chromium packages are fixed in 149.0.7827.155-1~deb13u1 for trixie and 149.0.7827.155-1~deb12u1 for 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

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

6 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 activity1

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

EXTERNAL REFERENCES
MITRE CVE
cve.org · CVE-2026-12452
NVD
nvd.nist.gov/vuln/detail/CVE-2026-12452
MITRE CWE · CWE-416
cwe.mitre.org