Buffer overflow in Google Chrome
CVE-2025-0999
Heap buffer overflow in V8 in Google Chrome prior to 133.0.6943.126 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.006 (48.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 49th percentile — 48.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000
Affected products
- Google Chrome — versions 133.0.6943.126
Weakness classification (CWE)
Public proof-of-concept exploits
References
- chromereleases.googleblog.com/2025/02/stable-channel-update-for-desktop_18.html (Release Notes)
- issues.chromium.org/issues/394350433 (Permissions Required, Issue Tracking)
Frequently asked questions
- What is CVE-2025-0999?
- CVE-2025-0999 is a high-severity vulnerability in Google Chrome, classified under Heap-based Buffer Overflow. CVSS score: 8.8/10. Published 2025-02-19.
- How severe is CVE-2025-0999?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2025-0999 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.