Intel

CVE-2026-93380

chrome: Time-of-check Time-of-use (TOCTOU) Race Condition (CVE-2026-93380)

lowEPSS 0.2%

Description

Race condition in FileSystem in Google Chrome prior to 153.0.8010.52 allowed a remote attacker who had compromised the renderer process and leveraged social engineering to bypass system access restrictions via a crafted HTML page. (Chromium security severity: Medium)

Source: Debian Security AdvisoriesBSI WID PortalBSI CSAFMicrosoft Security Update GuideNVD (NIST)cvelistv5

Affected products

The following versions are affected. Older releases of the same product line are also vulnerable unless stated otherwise.

googlechrome
153.0.8010.52fixed from 153.0.8010.52

Metrics

XIEM Effective CVSS
3.1
Source: cna-v3
EPSS percentile
9.0 %
Low — this CVE sits in the lower 10% of all CVEs scored today.
KEV status
—
Show all metrics
Severity
low
Priority score
46.16
Exploit maturity
no public PoC known
CVSS v3
3.1
EPSS score
0.2 %
Low — model estimates < 1% exploitation likelihood.
Published
2026-09-30 20:25 UTC
CWE
CWE-367

Weakness classes (CWE)

  • CWE-367Base

    Time-of-check Time-of-use (TOCTOU) Race Condition

    The product checks the state of a resource before using that resource, but the resource's state can change between the check and the use in a way that invalidates the results of the check.

    cwe.mitre.org →

References & sources

Reanalysis & status changes

Chronological NVD audit events for this CVE — reanalyses, CVSS updates, CPE diffs.

  1. Initial Analysis2026-09-21 11:00 UTC· nvd@nist.gov
    • CPE Configuration: OR *cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:* versions up to (excluding) 153.0.8010.52
    • Reference Type: Chrome: https://chromereleases.googleblog.com/2026/09/stable-channel-update-for-desktop_0194356994.html Types: Release Notes, Vendor Advisory
    • Reference Type: Chrome: https://issues.chromium.org/issues/498411599 Types: Permissions Required
  2. CVE Modified2026-09-18 14:19 UTC· 134c704f-9b21-4f2e-91b3-4a467353bcc0
    • CVSS V3.1: AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N
    • SSVC: {"id":"CVE-2026-93380","role":"CISA Coordinator","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalI…
  3. New CVE Received2026-09-17 21:17 UTC· chrome-cve-admin@google.com
    • Description: Race condition in FileSystem in Google Chrome prior to 153.0.8010.52 allowed a remote attacker who had compromised the renderer process and leveraged social engineering to bypass system access restrictions via a crafted HTML page. (Chromium security severity: Medium)
    • CWE: CWE-367
    • Affected: New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/93xxx/CVE-2026-93380.json">CVE-2026-93380</a>
    • Reference: https://chromereleases.googleblog.com/2026/09/stable-channel-update-for-desktop_0194356994.html