EUVD-2025-19675Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A06:2021 - Vulnerable and Outdated Components
ASVS 5.0
V15 - Secure Coding and Architecture Type safety enforcement
MITRE ATT&CK
1 technique across 1 tactic: Execution The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Impact | CVSS 8.1 (High). KEV-listed — actively exploited. Public PoC available. Arbitrary read/write primitive = highly reliable exploitation. Drive-by attack — user visits a page. Affects all Chromium browsers. EPSS 0.5%. |
| Exploit ScenarioDerived | An attacker crafts JavaScript that triggers V8's JIT compiler to miscompile a function, creating a type confusion. The resulting compiled code reads/writes object fields at wrong offsets, providing arbitrary memory access. The attacker uses this to: leak pointer addresses (bypass ASLR), overwrite function pointers or JIT code pages, achieve code execution in the renderer, and potentially chain with sandbox escape for full system compromise. |
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Alert meAnalysisAIv1 – Mar 16, 2026
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.
Earlier versions of this analysis (1)
V8 contains a type confusion vulnerability (CWE-843) where an object of one type is accessed as a different type, enabling arbitrary read and write operations in the renderer process memory.
RemediationAI
Update Chrome to 138.0.7204.96+. Update all Chromium browsers. Enterprise: push updates via Group Policy.
Affected VersionsENISA
Affected Packages
Source: OSV (Open Source Vulnerabilities)
Affects your stack
Affects 1 package in euvd
Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
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.
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
Primary rating from NVD.
CVSS VectorNVD
Lifecycle Timeline
4DescriptionCVE.org
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)
Executive ViewAI
Organizations using V8 in Google Chrome face notable risk from CVE-2025-6554 rated CVSS 8.1. Successful exploitation could significantly impact the confidentiality, integrity, or availability of affected systems. This vulnerability is actively exploited in the wild (KEV-listed) and requires immediate remediation. Immediate patching is required per CISA KEV mandate.
Apply vendor patch. If immediate patching is not feasible: (1) Implement network-level access controls to limit exposure; (2) Enable enhanced monitoring and alerting; (3) Apply principle of least privilege.
Threat Intelligence Overview
NVD
CVE.org
CISA KEV
EPSS
GitHub
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Memory corruption occurs when a program writes data beyond the boundaries of allocated memory regions or accesses memory in unintended ways, violating the integrity of the process's address space.
Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.
Use-after-free vulnerability in the DisplayObject class in the ActionScript 3 (AS3) implementation in Adobe Flash Player
V8 in Google Chrome prior to 54.0.2840.90 for Linux, and 54.0.2840.85 for Android, and 54.0.2840.87 for Windows and Mac
Type confusion in V8 in Google Chrome prior to 59.0.3071.86 for Linux, Windows, and Mac, and 59.0.3071.92 for Android, a
The Array.prototype.concat implementation in builtins.cc in Google V8, as used in Google Chrome before 49.0.2623.108, do
Mozilla Firefox before 18.0, Firefox ESR 10.x before 10.0.12 and 17.x before 17.0.2, Thunderbird before 17.0.2, Thunderb
Incorrect handling of complex species in V8 in Google Chrome prior to 57.0.2987.98 for Linux, Windows, and Mac and 57.0.
The Chrome Object Wrapper (COW) implementation in Mozilla Firefox before 16.0, Firefox ESR 10.x before 10.0.8, Thunderbi
An issue was discovered in the Cisco WebEx Extension before 1.0.7 on Google Chrome, the ActiveTouch General Plugin Conta
The XrayWrapper implementation in Mozilla Firefox before 35.0 and SeaMonkey before 2.32 does not properly interact with
The Chrome Object Wrapper (COW) implementation in Mozilla Firefox before 18.0, Firefox ESR 17.x before 17.0.2, Thunderbi
The Web IDL implementation in Mozilla Firefox before 28.0, Firefox ESR 24.x before 24.4, Thunderbird before 24.4, and Se
Use-after-free vulnerability in the BitmapData class in the ActionScript 3 (AS3) implementation in Adobe Flash Player 13
Same technique Information Disclosure
View allVendor StatusVendor
Debian
| 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 | - |
SUSE
Severity: High| Product | Status |
|---|---|
| SUSE Package Hub 15 SP6 | Fixed |
| openSUSE Leap 15.6 | Fixed |
| openSUSE Tumbleweed | Fixed |
| SUSE Package Hub 15 SP6 | Fixed |
| SUSE Package Hub 15 SP6 | Fixed |
| SUSE Package Hub 15 SP6 | Fixed |
Exploit-DB