Use after free in WebRTC in Google Chrome prior to 138.0.7204.157 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)
Conclusion & alert: CVE-2025-7657 is rated Moderate Risk (41.1/100): CVSS High severity, with low exploitation likelihood (EPSS 0.05%). Mandatory action: Review affected assets and schedule remediation.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-03-31 | 0.04% | 0.05% | +0.01% |
| 2 | 2026-03-04 | 0.11% | 0.04% | -0.07% |
| 3 | 2026-03-01 | — | 0.11% | — |
Full EPSS history (15 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 8.8 | 3.1 | HIGH |
|
2.8 | 5.9 | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
| vendor | priority | summary | link |
|---|---|---|---|
alpine
|
high | CVE-2025-7657: 1 source package rows (qt6-qtwebengine); 2 state rows across 2 repos (3.22-community, edge-community); fixed 2, open 0. | https://security.alpinelinux.org/vuln/CVE-2025-7657 |
debian
|
end-of-life | CVE-2025-7657 end-of-life priority: Debian including 1 source packages (chromium), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 4, open 1. | https://security-tracker.debian.org/tracker/CVE-2025-7657 |
ubuntu
|
medium | CVE-2025-7657 medium priority: Ubuntu including 1 source packages (chromium-browser), 4 status rows across 4 suites (jammy, noble, plucky, upstream): not-affected 3, released 1. | https://ubuntu.com/security/CVE-2025-7657 |
| URL | Tags |
|---|---|
| https://chromereleases.googleblog.com/2025/07/stable-channel-update-for-desktop_15.html | Release Notes |
| https://issues.chromium.org/issues/427681143 | Issue Tracking Permissions Required |