How severe is CVE-2025-46688?

CVE-2025-46688 has a CVSS 3.x base score of 5.6, rated medium severity. It is exploitable over local access with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2025-46688 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (19th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-46688?

CVE-2025-46688 primarily affects Quickjs-ng Quickjs. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2025-46688?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-46688 have an EU (EUVD) identifier?

Yes. CVE-2025-46688 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-12432.

When was CVE-2025-46688 published?

CVE-2025-46688 was published on 2025-04-27 and last updated on 2026-06-17.

CVE-2025-46688

CVE-2025-46688 is a medium-severity vulnerability in Quickjs-ng Quickjs with a CVSS 3.x base score of 5.6. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-131.

Key facts

Severity: Medium (CVSS 3.x base score 5.6)
EPSS exploit prediction: 0% (19th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-12432
Weakness: CWE-131
Affected product: Quickjs-ng Quickjs
Published: 2025-04-27
Last modified: 2026-06-17

Description

quickjs-ng through 0.9.0 has an incorrect size calculation in JS_ReadBigInt for a BigInt, leading to a heap-based buffer overflow. QuickJS before 2025-04-26 is also affected.

Frequently asked questions

What is CVE-2025-46688?: quickjs-ng through 0.9.0 has an incorrect size calculation in JS_ReadBigInt for a BigInt, leading to a heap-based buffer overflow. QuickJS before 2025-04-26 is also affected.
How severe is CVE-2025-46688?: CVE-2025-46688 has a CVSS 3.x base score of 5.6, rated medium severity. It is exploitable over local access with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2025-46688 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (19th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-46688?: CVE-2025-46688 primarily affects Quickjs-ng Quickjs. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2025-46688?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-46688 have an EU (EUVD) identifier?: Yes. CVE-2025-46688 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-12432.
When was CVE-2025-46688 published?: CVE-2025-46688 was published on 2025-04-27 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:quickjs-ng:quickjs:*:*:*:*:*:*:*:*
cpe:2.3:a:quickjs_project:quickjs:*:*:*:*:*:*:*:*

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