CVE-2025-6554

Exp

Type confusion in V8 in Google Chrome prior to 138.0.7204.96 allowed a remote attacker to perform arbitrary read/write via a crafted HTML page. (Chromium security severity: High)

Published: 2025-06-30 Last update: 2025-10-24 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2025-6554 is rated Critical Active Threat (86.6/100): CVSS High severity, with medium exploitation likelihood (EPSS 1.58%). CISA KEV confirms active exploitation (added 2025-07-02) affecting Google / Chromium V8. a weakness (CWE-843) Unauthenticated remote administrative access may be possible. The CISA remediation deadline has passed—treat as an emergency patch priority.

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

CISA KEV Record for CVE-2025-6554

Name: Google Chromium V8 Type Confusion Vulnerability · CISA KEV detail

Exploit added: 2025-07-02

Action due: 2025-07-23

Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Exploit prediction scoring system (EPSS) score for CVE-2025-6554

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 2026-04-26 0.94% 1.58% +0.64%
2 2026-03-21 0.73% 0.94% +0.20%
3 2026-03-16 — 0.73% —

Full EPSS history (33 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2025-6554

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.1 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N 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:N)
Service keeps running; no real outage angle.
 2.8 5.2 134c704f-9b21-4f2e-91b3-4a467353bcc0

Weakness enumeration for CVE-2025-6554

OS Trackers for CVE-2025-6554

vendor priority summary link
alpine — CVE-2025-6554: 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-2025-6554
debian end-of-life CVE-2025-6554 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-2025-6554
redhat high — https://access.redhat.com/security/cve/CVE-2025-6554

Affected software / configurations for CVE-2025-6554

Vendor Product Version Raw CPE
google chrome < 138.0.7204.96 cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*
google chrome < 138.0.7204.92 cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*

References for CVE-2025-6554

cvelogic Threat Intelligence