CVE-2025-9478: google chrome Use After Free
CVSS: 8.8v3.1HighAnalyzed
AliasesDEBIAN-CVE-2025-9478DSA-5988-1CGA-cpxh-3rrf-vq8vCGA-cq2c-85p3-wc9ropenSUSE-SU-2025:15500-1
Published 26-08-2025Last modified 26-02-2026
Vulnerability summary
CVE-2025-9478 is a high (CVSS 8.8) Use After Free vulnerability in google chrome. EPSS estimates a 7.27% chance of exploitation in the next 30 days, higher than 94.2% of scored vulnerabilities.
CVSS score
8.8/10
010
High · v3.1 (CVE.org)EPSS score
7.27%
0%100%
Low · +3.70 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 4 · Related 3Timeline
- 26-08-2025PublishedVulnerability first disclosed.
- 26-02-2026Last modifiedVulnerability information updated.
Description
Use after free in ANGLE in Google Chrome prior to 139.0.7258.154 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: Critical)
CVSS metrics
5 scores · 5 sources · 1 versionHigh 8.8Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HSourcesAll 5 agree
- OSV · DebianEcosystem advisory · calculated8.8HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- OSV · WolfiEcosystem advisory · calculated8.8HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- OSV · ChainguardEcosystem advisory · calculated8.8HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- NVDNIST8.8HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS trend
Probability
7.27%
Chance of exploitation in the next 30 days
Percentile
94%
Versus all other CVEs
30-day change
+3.70 pp
From 3.57% on 19-09-2026
19-09-202619-10-2026
EPSS score7.27%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Debian3 products
- chromium< 139.0.7258.154-1 | < 139.0.7258.154-1~deb12u1 | < 139.0.7258.154-1~deb13u1
- webkit2gtkAll versions (No fix recorded) | < 2.54.0-1~deb13u1
- wpewebkitAll versions (No fix recorded) | < 2.54.0-1
Chainguard1 product
- chromium< 139.0.7258.154-r0
Google1 product
- chrome≥ 139.0.7258.154, < 139.0.7258.154 | < 139.0.7258.154
Opensuse1 product
- chromium&distro=openSUSE Tumbleweed< 139.0.7258.154-1.1
Wolfi1 product
- chromium< 139.0.7258.154-r0
5 vendors · 7 products
References
4 links- chromereleases.googleblog.com/2025/08/stable-channel-update-for-desktop_26.htmlAdvisoryRelease NotesVendor Advisory
