ZeroHour

CVE-2026-87512

mass

Use-After-Free in Google Chrome ANGLE Allows Code Execution Outside Sandbox on Windows

CVSS 3.1
9.6 critical
EPSS
<1%p41
Published
()
Modified
AI analysis

CVE-2026-87512 is a use-after-free (CWE-416) in ANGLE, the graphics translation layer Chrome uses for WebGL, in Google Chrome on Windows; Chromium rates it High and CVSS 3.1 scores it 9.6 (critical). It is triggered when the browser processes a crafted HTML page, which requires user interaction such as visiting an attacker-controlled site, and it lets the attacker execute arbitrary code outside the Chrome sandbox, i.e., escape from the web-content sandbox. Any Chrome user on Windows running a version before 153.0.8010.36 is affected; other platforms are not named in the advisory. The CVE record lists no public proof-of-concept and the flaw is not yet in CISA KEV, but reporting on the Chrome 153 release (230 security fixes) indicates a zero-day exploited in the wild was patched in the same release, so defenders should treat active exploitation as plausible. EPSS currently estimates only a 0.4% probability of exploitation within 30 days (29th percentile), so patching urgency is driven by the bug's severity and the reported in-the-wild zero-day in this release.

What to do: Update Google Chrome on Windows to 153.0.8010.36 or later immediately (Help > About Chrome applies the update, then relaunch the browser) and verify fleet versions via enterprise management tooling. Until patched, limit exposure to untrusted sites and consider disabling WebGL as a stopgap; monitor for the CVE's addition to CISA KEV and for confirmation that it is the zero-day reportedly exploited in the wild.

Affected
google chromeAll Google Chrome releases on Windows prior to 153.0.8010.36
Estimated exposure
massbillions of Chrome users on Windows potentially exposed (Chrome has roughly 3+ billion users and about 65% of global browser market share) — Estimated from Chrome's public installed base of roughly 3 billion users (about two-thirds of global browser usage), since the flaw affects all Windows builds before the 153.0.8010.36 patch and is reachable through ordinary web browsing;…

Order-of-magnitude estimate by the model from install counts, market share and public scan data it knows; verify before quoting.

Description

Use after free in ANGLE in Google Chrome on on Windows prior to 153.0.8010.36 allowed a remote attacker to execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: High)

Vendors
google
Products
chrome
Weakness
CWE-416
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

In the news

Google Chrome 153 Released With 230 Security Fixes and Zero-Day Exploited in the Wild

Google released Chrome 153 with 230 security fixes, patching CVE-2026-87491, a V8 out-of-bounds write zero-day actively exploited in the wild.

Google shipped Chrome 153 (153.0.8010.36/.37) for Windows, macOS, and Linux with 230 security fixes, including CVE-2026-87491, a medium-severity V8 out-of-bounds write being exploited in the wild. The release also fixes five critical vulnerabilities: four in WebGL (two use-after-frees, an out-of-bounds write, a buffer overflow) and one use-after-free in Cast. High-severity V8 use-after-free and type-confusion defects are among the fixes, and Google has restricted technical details until most users are patched. Administrators should verify deployed versions on managed endpoints, as Chrome-derived browsers may follow different patch schedules.

GBHackers · 6d agoExploit / PoC in the wildCVE-2026-87491CVE-2026-87464CVE-2026-87488+19 CVEs

Chrome 153 Fixes 230 Vulnerabilities, Including One 0-Day Exploited in the Wild

Google shipped Chrome 153 with 230 fixes, including CVE-2026-87491, a V8 out-of-bounds write zero-day exploited in the wild.

Chrome 153 (153.0.8010.36/.37) rolls out to Windows, Mac, and Linux with 230 security fixes, among the largest patch batches in recent Chrome history. The headline flaw is CVE-2026-87491, a Medium-severity out-of-bounds write in the V8 JavaScript and WebAssembly engine that Google confirmed is exploited in the wild; it was reported by Jihyeon Jeong of Compsec Lab at Seoul National University for a $2,500 bounty. The release also closes five Critical-rated flaws, including CVE-2026-87464, CVE-2026-87488, CVE-2026-87438, CVE-2026-87527, and CVE-2026-87628, mostly use-after-free and out-of-bounds write bugs in WebGL and Cast, plus 43 High-severity issues across ANGLE, PDFium, V8, DevTools, and Payments. Several bugs were surfaced with AI-assisted discovery tools, including OpenAI's Codex Security team, and top bounties reached $5,000 for CVE-2026-87504.