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Critical

Use-after-free in Google Chrome UI leading to potential sandbox escape

IdentifiersCVE-2026-8511CWE-416· Use After Free

CVE-2026-8511 is a Critical use-after-free vulnerability in the UI component of Google Chrome affecting versions prior to 148.0.7778.168. According to the provided content, the flaw can be triggered by a remote attacker via a crafted HTML page. The underlying weakness is a use-after-free condition, where UI-related memory is accessed after it has been freed, creating the possibility of memory corruption and unintended control over program behavior. The available information does not identify the specific vulnerable function or code path, but the issue is explicitly described as potentially enabling a sandbox escape.

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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 could allow a remote attacker to leverage memory corruption in Chrome's UI component to potentially escape the browser sandbox. Given the provided CVSS vector (AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H), the expected impact includes compromise of confidentiality, integrity, and availability beyond the initially affected browser context. In practical terms, this could enable execution or influence outside the normal renderer sandbox boundary, increasing the risk of host compromise or broader access than a renderer-only bug would provide.

Mitigation

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

If immediate patching is not possible, reduce exposure by limiting use of untrusted websites and untrusted HTML content until the update is deployed. Enterprise defenders can prioritize rapid browser patch rollout, enforce automatic updates, and restrict execution contexts where feasible. However, no complete mitigation is provided in the source content; vendor patching is the primary corrective action.

Remediation

Patch, then assume compromise.

Update Google Chrome to version 148.0.7778.168 or later. The provided content states that the vulnerability affects Chrome prior to 148.0.7778.168 and was fixed in Google's May 2026 stable channel security update. Apply the vendor update across managed and unmanaged endpoints and ensure the browser is relaunched so the patched version is active.
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

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

8 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 activity4

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

EXTERNAL REFERENCES
MITRE CVE
cve.org · CVE-2026-8511
NVD
nvd.nist.gov/vuln/detail/CVE-2026-8511
MITRE CWE · CWE-416
Use After Free
Vendor Advisory
chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_12.html
Permissions Required
issues.chromium.org/issues/495108488