CVE-2025-12745: quickjs Buffer Overflow

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.

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CVSS v3.1 Score

5.3

MEDIUM

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

Weakness Type (CWE)

CWE-119 Buffer Overflow

CWE-126 CWE-126

CWE-125 Out-of-bounds Read

Affected Products

Vendor	Product	Versions
bellard	quickjs	< 2025-11-03

References

Advisories & Patches

https://github.com/bellard/quickjs/commit/c6fe5a98fd3ef3b7064e6e0145dfebfe12449fea

Exploits

https://github.com/bellard/quickjs/issues/451 https://github.com/bellard/quickjs/issues/451#issue-3533698042 https://github.com/bellard/quickjs/issues/451#issuecomment-3481807558 https://vuldb.com/?submit.678850 https://github.com/bellard/quickjs/issues/451 https://github.com/bellard/quickjs/issues/451#issue-3533698042 https://github.com/bellard/quickjs/issues/451#issuecomment-3481807558

Other References

https://vuldb.com/?ctiid.331268 https://vuldb.com/?id.331268

Frequently Asked Questions

What is CVE-2025-12745? +

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. It has a CVSS v3.1 base score of 5.3 (MEDIUM).

How severe is CVE-2025-12745? +

CVE-2025-12745 has a CVSS v3.1 score of 5.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-12745? +

CVE-2025-12745 affects products from bellard, specifically: quickjs. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-12745? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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