CVE-2021-38003

Google Chromium V8 Memory Corruption Vulnerability

IN CISA KEV

Google Chromium V8 Engine has a bug in JSON.stringify, where the internal TheHole value can leak to script code, causing memory corruption. This vulnerability could affect multiple web browsers that utilize Chromium, including, but not limited to, Google Chrome, Microsoft Edge, and Opera.

Vendor: Google
Product: Chromium V8
CVSS: No score recorded (no NVD record loaded for this entry)
CWE: CWE-122, CWE-755
Published: Not recorded
NVD modified: Not recorded

CISA KEV

Date added: 2021-11-03
Due date: 2021-11-17
Ransomware use: Unknown
Required action: Apply updates per vendor instructions.

EPSS

38.6% chance of exploitation in the next 30 days (percentile 98th)

FIRST EPSS, updated 17 Oct 2026. About EPSS

CVSS is severity, EPSS is likelihood, KEV means already exploited. EPSS is a statistical probability, not a certainty: a low score does not make a bug safe, and a high one does not prove it is being exploited.

Data last updated 18 Oct 2026. Sources: NVD API 2.0, CISA KEV catalog, FIRST EPSS. Links: NVD, CISA KEV. Metadata only. ThreatWire does not host exploit code.