CVE-2025-8576

Use after free in Extensions in Google Chrome prior to 139.0.7258.66 allowed a remote attacker to potentially exploit heap corruption via a crafted Chrome Extension. (Chromium security severity: Medium)

Published: 2025-08-07 Last update: 2025-11-13 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2025-8576 is rated Moderate Risk (42.3/100): CVSS High severity, with low exploitation likelihood (EPSS 0.30%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2025-8576

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 2026-06-15 0.75% 0.30% -0.45%
2 2026-06-03 0.22% 0.75% +0.53%
3 2026-05-24 — 0.22% —

Full EPSS history (11 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2025-8576

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.8 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.8 5.9 134c704f-9b21-4f2e-91b3-4a467353bcc0

Weakness enumeration for CVE-2025-8576

OS Trackers for CVE-2025-8576

vendor priority summary link
alpine — CVE-2025-8576: 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-2025-8576
debian end-of-life CVE-2025-8576 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-2025-8576
ubuntu medium CVE-2025-8576 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-2025-8576

Affected software / configurations for CVE-2025-8576

Vendor Product Version Raw CPE
google chrome < 139.0.7258.66 cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*

References for CVE-2025-8576

cvelogic Threat Intelligence