4.3

CVE-2025-9479: google chrome Out-of-bounds Read

CVSS: 4.3v3.1MediumAnalyzed
AliasesDEBIAN-CVE-2025-9479CGA-3rfx-3j34-8h9qCGA-fh5c-3f38-jwwj
Published 14-11-2025Last modified 14-11-2025
Open JSON

Vulnerability summary

CVE-2025-9479 is a medium (CVSS 4.3) Out-of-bounds Read vulnerability in google chrome. EPSS estimates a 0.20% chance of exploitation in the next 30 days, higher than 9.7% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
27/100
0100
Medium · default modelHow is this calculated?
CVSS score
4.3/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.20%
0%100%
Low · +0.01 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference

Advisory lineage

Upstream 0 · Downstream 1 · Related 1
DSA-5875-1CGA-48PQ-M679-445J

Timeline

  1. 14-11-2025
    PublishedVulnerability first disclosed.
  2. 14-11-2025
    Last modifiedVulnerability information updated.

Description

Out of bounds read in V8 in Google Chrome prior to 133.0.6943.141 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: Medium)

CVSS metrics

5 scores · 5 sources · 1 version

EPSS trend

Probability

0.20%

Chance of exploitation in the next 30 days

Percentile

10%

Versus all other CVEs

30-day change

+0.01 pp

From 0.20% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.20%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (issues.chromium.org)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Chainguard1 product
  • chromium< 133.0.6943.141-r0
Debian1 product
  • chromium< 134.0.6998.35-1~deb12u1 | < 133.0.6943.141-1
Google1 product
  • chrome≥ 133.0.6943.141, < 133.0.6943.141 | < 133.0.6943.141
Wolfi1 product
  • chromium< 133.0.6943.141-r0

4 vendors · 4 products

References

3 links