Cyber Resilience

CVE-2025-10585

Memory Safety in Google Chrome ≤ 140.0.7339.185

CISA KEVActive ExploitationEUVD ExploitedMemory Safety
Published
24 September 2025
Modified
14 July 2026
KEV Added
23 September 2025
Patch / advisory
View advisory
CVSS Score v3.1 9.8
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.054 92th percentile
Risk Priority 97 floored blend · peak EPSS

Summary

CVE-2025-10585 is a critical-severity Type Confusion (CWE-843) vulnerability in Google Chrome. Its CVSS base score is 9.8 (Critical).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploitation for Privilege Escalation (T1068); ranked in the top 8% of CVEs by exploit likelihood; CISA has added it to the Known Exploited Vulnerabilities catalog.

The strongest mitigations our analysis identified map to SA-11 (Developer Testing and Evaluation) and SA-8 (Security and Privacy Engineering Principles) — see the control section below for these in your framework.

Deeper analysis AI-assisted summary

Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.

CVE-2025-10585 is a type confusion vulnerability (CWE-843) in the V8 JavaScript engine within Google Chrome versions prior to 140.0.7339.185. The flaw permits heap corruption when a victim visits a specially crafted HTML page, carrying a CVSS 3.1 base score of 9.8 reflecting network-exploitable impact on confidentiality, integrity, and availability without requiring authentication or user interaction beyond page rendering.

A remote attacker can deliver the malicious page through any web vector and leverage the resulting memory corruption to execute arbitrary code or cause denial of service in the browser process. Because the vulnerability resides in the core scripting engine, successful exploitation grants the attacker the full privileges of the Chrome renderer or, under certain sandbox escapes, broader system access.

Chrome stable channel updates released on 17 September 2025 address the issue by advancing the V8 component to version 140.0.7339.185. The vulnerability appears in CISA’s Known Exploited Vulnerabilities catalog, confirming observed in-the-wild exploitation and prompting federal agencies to apply mitigations within prescribed timelines.

EPSS remains flat at 0.0213 with no material increase since disclosure, indicating that while real-world use has been confirmed, broad automated exploitation interest has not yet surged.

EU & UK References

Vulnerability Data

Type confusion in V8 in Google Chrome prior to 140.0.7339.185 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)

CWE(s)
CWE-843
KEV Date Added
23 September 2025

Related Threats

MITRE ATT&CK Enterprise Techniques

T1068 Exploitation for Privilege Escalation Privilege Escalation
Adversaries may exploit software vulnerabilities in an attempt to elevate privileges.
attack.mitre.org →
T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
T1203 Exploitation for Client Execution Execution
Adversaries may exploit software vulnerabilities in client applications to execute code.
attack.mitre.org →
T1210 Exploitation of Remote Services Lateral Movement
Adversaries may exploit remote services to gain unauthorized access to internal systems once inside of a network.
attack.mitre.org →
T1212 Exploitation for Credential Access Credential Access
Adversaries may exploit software vulnerabilities in an attempt to collect credentials.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2025-13223Same product: Google Chromeboth on KEV
CVE-2022-1096Same product: Google Chromeboth on KEV
CVE-2022-4262Same product: Google Chromeboth on KEV
CVE-2021-30563Same product: Google Chromeboth on KEV
CVE-2022-3723Same product: Google Chromeboth on KEV
CVE-2022-1364Same product: Google Chromeboth on KEV
CVE-2021-30551Same product: Google Chromeboth on KEV
CVE-2024-5274Same product: Google Chromeboth on KEV
CVE-2024-4947Same product: Google Chromeboth on KEV
CVE-2024-7971Same product: Google Chromeboth on KEV

Affected Assets

google
chrome
≤ 140.0.7339.185
siemens
cadra
all versions

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)

—

Detect
Catch it (NIST detect / respond)

—

Harden
Shrink the surface (DISA STIG)

—

Validate
Prove the fix (OWASP ASVS)
  • V1.5.2
  • V3.2.3
  • V15.3.5

Mitigating Controls (NIST 800-53 r5) AI

SA-11 Developer Testing and Evaluation good match

Developer testing and evaluation (including fuzzing and type-aware analysis) directly finds type-confusion flaws before deployment.

SA-8 Security and Privacy Engineering Principles partial match

Engineering principles can require use of type-safe languages, static typing, and runtime type checks that structurally avoid allocating one type and accessing another.

SI-16 Memory Protection partial match

Memory-protection controls limit the blast radius when a type-confusion access occurs but do not stop the flaw itself.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-06 mostly match
prevents

Secure SDLC practices directly prevent type-confusion flaws via safe typing, static analysis, and code review while the control itself addresses many additional weaknesses.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.8.29 Security testing in development and acceptance mostly match
finds

Security testing in development can detect type-confusion vulnerabilities through fuzzing and static analysis.

A.8.25 Secure development life cycle partial match
prevents

Secure SDLC mandates type-safe design and review that can catch type-confusion flaws.

A.8.26 Application security requirements partial match
prevents

Application security requirements can specify strong typing and interface contracts that reduce type confusion.

A.8.27 Secure system architecture and engineering principles partial match
prevents

Secure architecture principles promote type-safe languages and memory-safety mechanisms that mitigate type confusion.

A.8.28 Secure coding partial match
prevents

Secure coding standards directly forbid unsafe type casts and require static-analysis checks for type confusion.

References