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CVE-2025-46688

22
FAUCET Score

CVE-2025-46688 describes a heap-based buffer overflow in quickjs-ng (through version 0.9.0) and QuickJS (before 2025-04-26), stemming from an incorrect size calculation during BigInt processing. This vulnerability carries a high severity CVSS score of 8.4, indicating a critical risk with potential for high impact on confidentiality, integrity, and availability, and can be exploited locally with low attack complexity. Currently, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 0.9.0CPE matchmatch criteria
cpe:2.3:a:quickjs-ng:quickjs:*:*:*:*:*:*:*:*
< 2025-04-26CPE matchmatch criteria
cpe:2.3:a:quickjs_project:quickjs:*:*:*:*:*:*:*:*
>= 0, < 2025-04-26CPE match
cpe:2.3:a:quickjs_project:quickjs:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.6MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
LOW
Exploitability Score
1.4
Impact Score
3.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.29%
Probability of exploitation in next 30 days
EPSS Percentile
20.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0029 is in the 20th percentile among its peer group of 3,241 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.5 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

bellard.org / quickjs/Changelog
Product
github.com / bellard/quickjs/commit/1eb05e44fad89daafa8ee3eb74b8520b4a37ec9a
Patch
github.com / bellard/quickjs/issues/399
ExploitThird Party Advisory
github.com / quickjs-ng/quickjs/commit/28fa43d3ddff2c1ba91b6e3a788b2d7ba82d1465
Patch
github.com / quickjs-ng/quickjs/issues/1018
Third Party Advisory
github.com / quickjs-ng/quickjs/pull/1020
Patch