# CVE-2026-12460 — Google Chrome

> As of 2026-06-17, CVE-2026-12460 is a MEDIUM-severity vulnerability in Google Chrome, CVSS v3.1 4.2, EPSS 0.1% (3.9th percentile). Threadlinqs Intelligence links 1 tracked threat campaign to CVE-2026-12460, most recently “Google Chrome 149 Multiple Memory-Corruption Vulnerabilities Enable Arbitrary Code Execution (CVE-2026-12437 through CVE-2026-12469)”.

**Last updated:** 2026-06-17

## What is CVE-2026-12460?

Insufficient policy enforcement in File System Access in Google Chrome prior to 149.0.7827.155 allowed a remote attacker who had compromised the renderer process to bypass site isolation via a crafted PDF file. (Chromium security severity: High)

The record classifies CVE-2026-12460 under weakness class [CWE-284](https://intel.threadlinqs.com/cwe/CWE-284). Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs no prior authentication, needs a user to take an action first. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 133 days ago.

## Severity and exploitation probability

- **CVSS v3.1 base score:** 4.2 — MEDIUM (`CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N`)
- **EPSS (FIRST):** 0.1% probability of exploitation in the next 30 days, higher than 3.9% of all scored CVEs
- **CISA KEV:** Not listed in the CISA Known Exploited Vulnerabilities catalog
- **Threadlinqs priority:** 4.3/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- **Published:** 2026-06-17

## Is CVE-2026-12460 being exploited?

Weaponised exploit code for CVE-2026-12460 is publicly available. 1 public proof-of-concept repository is tracked for this identifier. It currently carries a trending score of 15 in the Threadlinqs vulnerability feed.

- [trickest/cve](https://github.com/trickest/cve/blob/main/2026/CVE-2026-12460.md) (trickest)

## Affected products and versions

- [Google](https://intel.threadlinqs.com/vendors/google): Chrome

## How to fix CVE-2026-12460

Vendor advisory: [https://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop_01750511403.html](https://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop_01750511403.html). Apply the vendor fix referenced above to every affected product listed in this record, then confirm the running version against the vendor advisory.

## Threat activity tracking CVE-2026-12460

1 tracked threat in the Threadlinqs corpus references CVE-2026-12460, either in the campaign’s CVE list or as an indicator on the campaign record.

- [Google Chrome 149 Multiple Memory-Corruption Vulnerabilities Enable Arbitrary Code Execution (CVE-2026-12437 through CVE-2026-12469)](https://intel.threadlinqs.com/threat/TL-2026-0886) — CRITICAL · 2026-06-20

## Sources

Enriched from CVE.org, NVD, FIRST EPSS, public proof-of-concept repositories. Last verified by Threadlinqs on 2026-10-10. This product uses the NVD API but is not endorsed or certified by the NVD.

**Other references**

- [chromereleases.googleblog.com](https://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop_01750511403.html)
- [issues.chromium.org](https://issues.chromium.org/issues/517484284)

Canonical: https://intel.threadlinqs.com/cve/CVE-2026-12460
Full detection coverage and IOCs for threats exploiting CVE-2026-12460 via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp