CVE-2025-6554 (GCVE-0-2025-6554)
Vulnerability from cvelistv5 – Published: 2025-06-30 21:14 – Updated: 2025-10-21 22:45Summary
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)
Severity
8.1 (High)
SSVC
Exploitation: active
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-07-17 03:55 UTC
CWE
- CWE-843 - Type Confusion
Assigner
References
3 references
Impacted products
CISA
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 35447716-cd34-43a5-ba43-a33816a67a14
Exploited: Yes
Timestamps
First Seen: 2025-07-02
Asserted: 2025-07-02
Scope
Notes: KEV entry: Google Chromium V8 Type Confusion Vulnerability | Affected: Google / Chromium V8 | Description: 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. | 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. | Due date: 2025-07-23 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): https://chromereleases.googleblog.com/2025/06/stable-channel-update-for-desktop_30.html?m=1 ; https://nvd.nist.gov/vuln/detail/CVE-2025-6554
Evidence
Type: Vendor Report
Signal: Successful Exploitation
Confidence: 80%
Source: cisa-kev
Details
| Cwes | CWE-843 |
|---|---|
| Feed | CISA Known Exploited Vulnerabilities Catalog |
| Product | Chromium V8 |
| Due Date | 2025-07-23 |
| Date Added | 2025-07-02 |
| Vendorproject | |
| Vulnerabilityname | Google Chromium V8 Type Confusion Vulnerability |
| Knownransomwarecampaignuse | Unknown |
References
Created: 2026-02-02 12:25 UTC
| Updated: 2026-02-06 07:17 UTC
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: a83bdd29-4757-48b0-b34b-b4f05d6de384
Exploited: Yes
Timestamps
First Seen: 2026-06-01
Asserted: 2026-06-01
Scope
Notes: KEVIntel entry: 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.... | Affected: Google / Chrome | CVSS: 8.1 (HIGH) | EPSS: 0.06564 | Used in malware: unknown | Not yet in CISA KEV: False
Evidence
Type: Public Report
Signal: Successful Exploitation
Confidence: 70%
Source: kevintel
Details
| Feed | KEVIntel (kevintel.com) |
|---|---|
| Title | 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.... |
| Vendor | |
| Product | Chrome |
| Added Date | 2026-06-01T10:36:20.047Z |
| Cvss Score | 8.1 |
| Epss Score | 0.06564 |
| Cvss Severity | HIGH |
| Epss Percentile | 0.92948 |
| Used In Malware | unknown |
| Ahead Of Cisa Kev |
|
| Not Yet In Cisa Kev | False |
References
Created: 2026-06-23 14:03 UTC
| Updated: 2026-07-10 06:14 UTC
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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