Security readout for executives and security teams
Plain-English summary
CVE-2025-6554 is a high-severity Chrome V8 flaw. A malicious web page could let an attacker read or alter browser memory after a user visits it. Because CISA lists it in KEV, treat unpatched Chrome as an urgent exposure.
Executive priority
Prioritize rapid enterprise-wide Chrome patching. The flaw has high impact, requires only a malicious page plus user interaction, and is listed by CISA as known exploited.
Technical view
The issue is CWE-843 type confusion in V8 in Google Chrome prior to 138.0.7204.96. The CVSS 3.1 score is 8.1, with network attack vector, low complexity, no privileges, and user interaction required. The CVE states arbitrary read/write is possible via crafted HTML.
Likely exposure
Exposure is likely wherever managed or unmanaged Google Chrome installations remain below 138.0.7204.96. Risk is higher for users who browse external sites or open links from email, chat, or web applications.
Exploitation context
CISA KEV status supports known exploitation. Public source data does not provide exploit details, observed campaigns, or affected non-Chrome products. User interaction is required because the CVE describes exploitation through a crafted HTML page.
Researcher notes
Focus validation on Chrome version state, restart completion, and endpoint coverage. The public bundle names V8 type confusion and arbitrary read/write but does not include exploit mechanics, patch diff details, or campaign indicators.
Mitigation direction
- Update Google Chrome to 138.0.7204.96 or later.
- Force browser restart after update completion.
- Use enterprise browser management to enforce minimum Chrome version.
- Check Google and CISA guidance for any supplemental mitigations.
Validation and detection
- Inventory Chrome versions across managed endpoints.
- Confirm no Chrome install remains below 138.0.7204.96.
- Verify browser restart status after patch deployment.
- Track remediation against CISA KEV urgency.
- Review security telemetry for suspicious browser compromise indicators.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-843: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2025-6554 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 8.1 (3.1)
- Known Exploited
- Yes
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CISA KEV status
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N2.85.2Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
8.1HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://chromereleases.googleblog.com/2025/06/stable-channel-update-for-desktop_30.htmlCVE reference
- https://issues.chromium.org/issues/427663123CVE reference
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-6554CVE reference · government-resource
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Access of Resource Using Incompatible Type ('Type Confusion')
Access of Resource Using Incompatible Type ('Type Confusion') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.