High severity · published Nov 5, 2025
CVE-2025-12745
QuickJS quickjs.c js_array_buffer_slice buffer over-read
7.8
CVSS
0.2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 12% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
QU
QuickJS ·
eb2c89087def1829ed99630cb14b549d7a98408c · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-12745
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-12745
Patch
https://github.com/bellard/quickjs/commit/c6fe5a98fd3ef3b7064e6e0145dfebfe12449fea
Exploit
https://github.com/bellard/quickjs/issues/451
Exploit
https://github.com/bellard/quickjs/issues/451#issue-3533698042
Exploit
https://github.com/bellard/quickjs/issues/451#issuecomment-3481807558
Permissions Required
https://vuldb.com/?ctiid.331268
Third Party Advisory
https://vuldb.com/?id.331268
