How severe is CVE-2025-12745?

CVE-2025-12745 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2025-12745 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (9th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-12745?

CVE-2025-12745 affects Bellard Quickjs. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-12745?

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

Does CVE-2025-12745 have an EU (EUVD) identifier?

Yes. CVE-2025-12745 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-37919.

When was CVE-2025-12745 published?

CVE-2025-12745 was published on 2025-11-05 and last updated on 2026-06-17.

CVE-2025-12745

CVE-2025-12745 is a medium-severity vulnerability in Bellard Quickjs with a CVSS 3.x base score of 5.3. 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-125.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v2: 4.3
CVSS v4: 1.9
EPSS exploit prediction: 0% (9th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-37919
Weakness: CWE-125
Affected product: Bellard Quickjs
Published: 2025-11-05
Last modified: 2026-06-17

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.

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.
How severe is CVE-2025-12745?: CVE-2025-12745 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2025-12745 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (9th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-12745?: CVE-2025-12745 affects Bellard Quickjs. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-12745?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-12745 have an EU (EUVD) identifier?: Yes. CVE-2025-12745 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-37919.
When was CVE-2025-12745 published?: CVE-2025-12745 was published on 2025-11-05 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:bellard:quickjs:*:*:*:*:*:*:*:*

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