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Full vulnerability report · 2025
CVE-2025-6554High confidence

Google Chromium V8 Type Confusion Vulnerability

Google · Chromium V8

8.1HighCVSS 3.1
Recommended action
Patch now

CISA confirms exploitation in the wild and lists 2025-07-23 as the remediation due date.

Patch available
Direct vendor intelligence

Authoritative vendor CSAF and VEX advisories

Structured product status and remediation from the issuing vendor. Product-state explanations are always visible; large lists can be searched or downloaded.

1 current
SSA-365200 · CSAF 2.0 · revision 2 · interimSiemens ProductCERTSSA-365200: Google Chrome Type Confusion Vulnerability in Siemens Products
2 known affected

The vendor explicitly identifies these products as affected by this CVE.

  • HyperLynx
  • Industrial Edge App Publisher
Summary
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)
Remediation
Update to V1.23.5 or later version
Optional official sources

National CERT insights
?CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.

Select the national-authority views to include. The exact source language is shown on each matched advisory. Your choice is remembered on this device and encoded in the shareable URL.

Official European source

ENISA European Vulnerability Database

Official EUVD identifiers, advisory evidence and known-exploited context. Missing fields are not treated as evidence of low risk.

1 current
ENISA EUVD identifier

EUVD-2025-19675

CISA KEV mirrored by ENISA

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)

EUVD state
Present in the current official mapping
Known exploitation
Recorded by ENISA since 2 Jul 2025. Evidence sources: cisa_kev.
ENISA score
8.1 · CVSS 3.1
Advisory evidence
7 linked advisory records
Explicit mitigation evidence

Only statements that explicitly mention a fix, patch, update, workaround or mitigation are shown here.

  • csaf_ncscnl · NCSC-2025-0218Kwetsbaarheden verholpen in Microsoft Edge (Chromium based)
  • csaf_ncscnl · NCSC-2025-0209Kwetsbaarheid verholpen in Google Chrome
  • csaf_ncscnl · NCSC-2025-0309Kwetsbaarheden verholpen in Siemens producten
Recommended actionPatch now

CISA confirms exploitation in the wild and lists 2025-07-23 as the remediation due date.

Patch available
01

What, why and how

Google Chromium V8 contains a type confusion vulnerability that could allow a remote attacker to perform arbitrary read/write via a crafted HTML page. This vulnerability could affect multiple web browsers that utilize Chromium, including, but not limited to, Google Chrome, Microsoft Edge, and Opera.

What

Google Chromium V8 contains a type confusion vulnerability that could allow a remote attacker to perform arbitrary read/write via a crafted HTML page. This vulnerability could affect multiple web browsers that utilize Chromium, including, but not limited to, Google Chrome, Microsoft Edge, and Opera.

Why

The product allocates or initializes a resource such as a pointer, object, or variable using one type, but it later accesses that resource using a type that is incompatible with the original type.

How

An attacker operating through a network path may attempt exploitation without authentication after a user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

What

Google Chromium V8 contains a type confusion vulnerability that could allow a remote attacker to perform arbitrary read/write via a crafted HTML page. This vulnerability could affect multiple web browsers that utilize Chromium, including, but not limited to, Google Chrome, Microsoft Edge, and Opera.

Why

The product allocates or initializes a resource such as a pointer, object, or variable using one type, but it later accesses that resource using a type that is incompatible with the original type.

How

An attacker operating through a network path may attempt exploitation without authentication after a user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

02

Exploit reality and attack path

CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.

Observed exploitation
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
Confirmed in the wild

CISA added this CVE to its Known Exploited Vulnerabilities catalogue on 2025-07-02.

Public PoC / exploit material
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
None recorded

No exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.

Likely attack path
a network path → Access of Resource Using Incompatible Type ('Type Confusion') → cause the confidentiality, integrity or availability impact described by the vendor
Attack surface
Network
Privileges required
None: unauthenticated exploitation is possible
User interaction
Required interaction required
Attack complexity
Low: no specialised conditions are recorded
Security boundary
Unchanged: impact remains within the vulnerable component's security authority
Weakness
?CWE means Common Weakness Enumeration: a standard category for the underlying weakness.
CWE-843

CWE-843: Access of Resource Using Incompatible Type ('Type Confusion'). The product allocates or initializes a resource such as a pointer, object, or variable using one type, but it later accesses that resource using a type that is incompatible with the original type.

CVSS vector
?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

Common Vulnerability Scoring System 3.1: the compact vector below is decoded into plain language.

AVNetworkAttack vector: The vulnerable component can be reached over a network.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.PRNonePrivileges required: The attacker does not need an account or existing privileges.UIRequiredUser interaction: Another user must perform an action for exploitation to succeed.SUnchangedScope: The security impact remains within the vulnerable component's authority.CHighConfidentiality impact: A successful attack can cause a major loss.IHighIntegrity impact: A successful attack can cause a major loss.ANoneAvailability impact: No direct loss is represented by this metric.
Post-exploitation / living off the land
No specific living-off-the-land technique is confirmed in the structured sources. Monitor normal administration tools for activity inconsistent with the affected service's baseline.
NetworkUnauthenticatedCWE-843CISA KEV
A

Official authority intelligence

Only matched European and national findings are included. Language selectors and unavailable sources are omitted.

ENISA EUVD · EUVD-2025-19675Known-exploited evidence recorded

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)

Official EUVD record
BSI · German · WID-SEC-W-2025-1436Google Chrome / Microsoft Edge: Schwachstelle ermöglicht Codeausführung

Ein entfernter, anonymer Angreifer kann eine Schwachstelle in Google Chrome / Microsoft Edge ausnutzen, um beliebigen Programmcode auszuführen.

Official advisory
CERT-FR · French · CERTFR-2026-AVI-0220Multiples vulnérabilités dans les produits Elastic

De multiples vulnérabilités ont été découvertes dans les produits Elastic. Certaines d'entre elles permettent à un attaquant de provoquer une exécution de code arbitraire à distance, un déni de service à distance et une falsification de requêtes côté serveur (SSRF).

Official advisory
CERT-FR · French · CERTFR-2025-AVI-0756Multiples vulnérabilités dans les produits VMware

.cve.org/CVERecord?id=CVE-2025-6426 Référence CVE CVE-2025-6427 https://www.cve.org/CVERecord?id=CVE-2025-6427 Référence CVE CVE-2025-6429 https://www.cve.org/CVERecord?id=CVE-2025-6429 Référence CVE CVE-2025-6430 https://www.cve.org/CVERecord?id=CVE-2025-6430 Référence CVE CVE-2025-6432 https://www.cve.org/CVERecord?id=CVE-2025-6432 Référence CVE CVE-2025-6433 https://www.cve.org/CVERecord?id=CVE-2025-6433 Référence CVE CVE-2025-6434 https://www.cve.org/CVERecord?id=CVE-2025-6434 Référence CVE CVE-2025-6435 https://www.cve.org/CVERecord?id=CVE-2025-6435 Référence CVE CVE-2025-6436 https://www.cve.org/CVERecord?id=CVE-2025-6436 Référence CVE CVE-2025-6554 https://www.cve.org/CVERecord?id=CVE-2025-6554 Référence CVE CVE-2025-6555 https://www.cve.org/CVERecord?id=CVE-2025-6555 Référence CVE CVE-2025-6556 https://www.cve.org/CVERecord?id=CVE-2025-6556 Référence CVE CVE-2025-6557 https://www.cve.org/CVERecord?id=CVE-2025-6557 Référence CVE CVE-2025-6558 https://www.cve.org/CVERecord?id=CVE-2025-6558 Référence CVE CVE-2025-6965 https://www.cve.org/CVERecord?id=CVE-2025-6965 Référence CVE CVE-2025-7339 https://www.cve.org/CVERecord?id=CVE-2025-7339 Référence CVE CVE-2025-7424 https://www.cve.org/CVERecord?id=CVE-2025-7424 Référence CVE CVE-2025-7425 https://www.cve.org/CVERecord?id=CVE-2025-7425 Ré

Official advisory
CERT-FR · French · CERTFR-2025-AVI-0582Multiples vulnérabilités dans les produits Palo Alto Networks

t App versions 6.2.x antérieures à 6.2.8 sur Linux (disponibilité prévue pour le 11 juillet 2025) GlobalProtect App versions 6.2.x antérieures à 6.2.8-h2 (6.2.8-c243) sur macOS et Windows GlobalProtect App versions 6.3.x antérieures à 6.3.3-h1 (6.3.3-c650) sur macOS et Windows Prisma Access Browser versions antérieures à 138.33.5.97 Résumé De multiples vulnérabilités ont été découvertes dans les produits Palo Alto Networks. Elles permettent à un attaquant de provoquer une élévation de privilèges, un contournement de la politique de sécurité et un problème de sécurité non spécifié par l'éditeur. Palo Alto Networks indique que la vulnérabilité CVE-2025-6554, qui affecte Prisma Access Browser, est activement exploitée. Solutions Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation). Documentation Bulletin de sécurité Palo Alto Networks CVE-2025-0139 du 09 juillet 2025 https://security.paloaltonetworks.com/CVE-2025-0139 Bulletin de sécurité Palo Alto Networks CVE-2025-0140 du 09 juillet 2025 https://security.paloaltonetworks.com/CVE-2025-0140 Bulletin de sécurité Palo Alto Networks CVE-2025-0141 du 09 juillet 2025 https://security.paloaltonetworks.com/CVE-2025-0141 Bulletin de sécurité Palo Alto Networks PAN-SA-2025-0012 du 09 juillet 2025 htt

Official advisory
CERT-FR · French · CERTFR-2025-AVI-0554Multiples vulnérabilités dans Grafana

De multiples vulnérabilités ont été découvertes dans les produits Grafana Labs. Elles permettent à un attaquant de provoquer un problème de sécurité non spécifié par l'éditeur.

Official advisory
CERT-FR · French · CERTFR-2025-AVI-0552Multiples vulnérabilités dans Microsoft Edge

De multiples vulnérabilités ont été découvertes dans Microsoft Edge. Elles permettent à un attaquant de provoquer une atteinte à la confidentialité des données et un problème de sécurité non spécifié par l'éditeur. Microsoft indique que la vulnérabilité CVE-2025-6554 est activement exploitée.

Official advisory
CERT-FR · French · CERTFR-2025-AVI-0549Vulnérabilité dans Google Chrome

Une vulnérabilité a été découverte dans Google Chrome. Elle permet à un attaquant de provoquer un problème de sécurité non spécifié par l'éditeur. Google indique que la vulnérabilité CVE-2025-6554 est activement exploitée.

Official advisory
NCSC-NL · Dutch · NCSC-2025-0309Kwetsbaarheden verholpen in Siemens producten

Palo Alto Networks has integrated Chromium security fixes addressing a high-severity type confusion vulnerability in the V8 JavaScript engine of Google Chrome, which allows remote attackers to perform arbitrary read/write operations via crafted HTML pages.

Official advisory
NCSC-NL · Dutch · NCSC-2025-0218Kwetsbaarheden verholpen in Microsoft Edge (Chromium based)

Een kwaadwillende kan de kwetsbaarheden misbruiken om willekeurige code uit te voeren met rechten van het slachtoffer, of om toegang te krijgen tot gevoelige gegevens in de context van de browser van het slachtoffer. In deze update wordt ook de kwetsbaarheid met kenmerk CVE-2025-6554 verholpen. Deze bevindt zich in de onderliggende Chrome-code en deze kwetsbaarheid is eerder door Google gemeld dat deze actief is misbruikt in Chrome.

Official advisory
NCSC-NL · Dutch · NCSC-2025-0209Kwetsbaarheid verholpen in Google Chrome

De kwetsbaarheid bevindt zich in de V8-engine van Google Chrome en is geclassificeerd als een type confusion kwetsbaarheid met hoge ernst. Dit stelt aanvallers in staat om willekeurige lees-/schrijfbewerkingen uit te voeren via speciaal vervaardigde HTML-pagina's. Google heeft bevestigd dat deze kwetsbaarheid actief wordt misbruikt in het wild.

Official advisory
03

Patch and workaround

Operational remediation based on structured source evidence.

Status
?Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change.
Patch available
Affected
HyperLynx; Industrial Edge App Publisher
Fixed
No fixed version is explicitly recorded in the structured CVE data.
Action
Update to V1.23.5 or later version
Workaround
No verified workaround is recorded. If business-safe, reduce exposure to the affected interface and allow only trusted sources until authoritative guidance is available.
04

Evidence and provenance

Published 30 Jun 2025 · Last source change 21 Oct 2025, 22:45 UTC · CWE-843 · Access of Resource Using Incompatible Type ('Type Confusion')

CVE recordCVE.org · 5.1
CVSS sourceCISA ADP
EPSS source
?The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.
FIRST · tracked since 2026-08-14
European sourceENISA EUVD · EUVD-2025-19675
Product sourceVendor CSAF · Siemens ProductCERT
Remediation sourceVendor CSAF · Siemens ProductCERT
CWE sourceCNA
NVD statusNVD enriched

Core structured fields are present and their contributing authorities are shown above.

Material change intelligence

What changed after publication

View recent updates →

No material field changes have been recorded since change tracking began. Routine source refreshes and cosmetic edits are intentionally excluded.

Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
Technical terms and abbreviations used in this report
CVE
Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
CVSS
Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
EPSS
Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
CWE
Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
CNA
CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
CISA ADP
Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
NVD
National Vulnerability Database: NIST's enrichment service for CVE records.
CERT / CSIRT
A computer security incident response team that publishes warnings or coordinates incident response.
PoC
Proof of concept: public material that demonstrates or helps reproduce exploitation.
CSAF
Common Security Advisory Framework: a machine-readable format for security advisories.
LoTL
Living off the land: abuse of legitimate tools or system functions during an attack.
Free version - for non-commercial use only.CVE-2025-6554 · cve.blacktree.nl