CVE-2025-46687
HIGH
7.8
CVSS Score
Published: April 27, 2025 at 12:00 AM UTC
Updated: June 17, 2026 at 09:26 AM UTC
2 products affected across 2 vendorsQuickJSQuickjs
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Severity
HIGH7.8
Exploit prediction
EPSS 0.3%
SSVC
PoC
Description
quickjs-ng through 0.9.0 has a missing length check in JS_ReadString for a string, leading to a heap-based buffer overflow. QuickJS before 2025-04-26 is also affected.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
v < 2025-04-26v < 2025-4-26
Affected range stops below 2025-4-26, so it looks safe — our inference, not a vendor statement
v ≤ 0.9.0
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
- https://github.com/bellard/quickjs/commit/1eb05e44fad89daafa8ee3eb74b8520b4a37ec9a
- https://github.com/bellard/quickjs/issues/399
- https://github.com/quickjs-ng/quickjs/commit/28fa43d3ddff2c1ba91b6e3a788b2d7ba82d1465
- https://github.com/quickjs-ng/quickjs/issues/1018
- https://github.com/quickjs-ng/quickjs/pull/1020
References (6)
ExploitIssue TrackingVendor Advisory
Source: [email protected]
https://github.com/bellard/quickjs/issues/399ExploitIssue TrackingVendor Advisory
Source: [email protected]
https://github.com/quickjs-ng/quickjs/issues/1018SSVC — Action Prioritization
SSVCPoCNot automatablePartial impact
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
- Attack Vector
- LOCAL
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- HIGH
Vector?
Quick Info
StatusANALYZED
CWE
CWE-770
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