What is the CVSS score of CVE-2025-6554?

CVE-2025-6554 has a CVSS 3.1 base score of 8.1 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N. EPSS exploitation probability: 0.5%.

Which versions of Chrome are affected by CVE-2025-6554?

Organizations using V8 in Google Chrome face notable risk from CVE-2025-6554 rated CVSS 8.1.. A patch is available.

Is there a public PoC exploit available for CVE-2025-6554?

Yes, a public proof-of-concept exploit is available for CVE-2025-6554. Prioritise patching immediately. EPSS: 0.5%.

How to fix or mitigate CVE-2025-6554?

Within 24 hours: Identify all affected systems running V8 in Google Chrome and apply vendor patches immediately. Monitor vendor channels for patch availability.

Chrome CVE-2025-6554

EUVD-2025-19675 HIGH

Access of Resource Using Incompatible Type (Type Confusion) (CWE-843)

2025-06-30 chrome-cve-admin@google.com

Information Disclosure Chrome Google Memory Corruption Debian Red Hat Suse

8.1

CVSS 3.1

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

None

Lifecycle Timeline

Patch released

Mar 31, 2026 - 21:13 nvd

Patch available

EUVD ID Assigned

Mar 16, 2026 - 01:25 euvd

EUVD-2025-19675

Analysis Generated

Mar 16, 2026 - 01:25 vuln.today

Added to CISA KEV

Oct 24, 2025 - 14:11 cisa

CISA KEV

PoC Detected

Oct 24, 2025 - 14:11 vuln.today

Public exploit code

CVE Published

Jun 30, 2025 - 22:15 nvd

HIGH 8.1

DescriptionNVD

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)

AnalysisAI

Chrome's V8 engine contains a type confusion vulnerability (CVE-2025-6554, CVSS 8.1) enabling arbitrary read/write operations through crafted HTML pages. KEV-listed with public PoC, type confusion in V8 is the most reliable class of browser exploitation primitives, providing full memory read/write capability for code execution within the renderer sandbox.

Technical ContextAI

V8 type confusion occurs when the JIT compiler makes incorrect assumptions about an object's type, generating machine code that accesses memory using the wrong offsets and sizes. This provides the attacker with arbitrary read/write primitives — the most powerful exploitation building blocks. Type confusion bugs in V8 are considered the gold standard for browser exploitation because they provide reliable, flexible memory access.

RemediationAI

Update Chrome to 138.0.7204.96+. Update all Chromium browsers. Enterprise: push updates via Group Policy.

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Vendor StatusVendor

Debian

chromium

Release	Status	Fixed Version	Urgency
bullseye (security), bullseye	vulnerable	120.0.6099.224-1~deb11u1	-
bookworm	fixed	138.0.7204.92-1~deb12u1	-
bookworm (security)	fixed	146.0.7680.71-1~deb12u1	-
trixie	fixed	145.0.7632.159-1~deb13u1	-
trixie (security)	fixed	146.0.7680.71-1~deb13u1	-
forky	fixed	146.0.7680.71-1	-
sid	fixed	146.0.7680.80-1	-
bullseye	fixed	(unfixed)	end-of-life
(unstable)	fixed	138.0.7204.92-1	-

DSA-5955-1

CVE-2025-6554 vulnerability details – vuln.today

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