CVE-2025-12745

QuickJS quickjs.c js_array_buffer_slice buffer over-read

HIGH
7.8
CVSS Score
Published: November 5, 2025 at 06:32 PM UTC
Updated: October 19, 2026 at 01:10 PM UTC
1 product affected across 1 vendorQuickJS

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Severity
HIGH7.8
Exploit prediction
EPSS 0.2%
SSVC
PoC

Description

A weakness has been identified in QuickJS up to eb2c89087def1829ed99630cb14b549d7a98408c. This affects the function js_array_buffer_slice of the file quickjs.c. This manipulation causes buffer over-read. The attack is restricted to local execution. The exploit has been made available to the public and could be exploited. This product adopts a rolling release strategy to maintain continuous delivery Patch name: c6fe5a98fd3ef3b7064e6e0145dfebfe12449fea. To fix this issue, it is recommended to deploy a patch.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 2025-11-03eb2c89087def1829ed99630cb14b549d7a98408c

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (7)

VDB EntryTechnical DescriptionThird Party Advisory
Source: cverecord
https://vuldb.com/?id.331268
SignaturePermissions RequiredVDB Entry
Source: cverecord
https://vuldb.com/?ctiid.331268
Third Party AdvisoryExploitVDB Entry
Source: cverecord
https://vuldb.com/?submit.678850
Issue TrackingExploit
Source: cverecord
https://github.com/bellard/quickjs/issues/451

SSVC — 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-126CWE-119CWE-125

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