How severe is CVE-2024-33263?

CVE-2024-33263 has a CVSS 3.x base score of 4.0, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.

Is CVE-2024-33263 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-33263?

CVE-2024-33263 affects Bellard Quickjs. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-33263?

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

Does CVE-2024-33263 have an EU (EUVD) identifier?

Yes. CVE-2024-33263 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-31008.

When was CVE-2024-33263 published?

CVE-2024-33263 was published on 2024-05-14 and last updated on 2026-06-17.

CVE-2024-33263

CVE-2024-33263 is a medium-severity vulnerability in Bellard Quickjs with a CVSS 3.x base score of 4.0. 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-617.

Key facts

Severity: Medium (CVSS 3.x base score 4.0)
EPSS exploit prediction: 0% (23rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-31008
Weakness: CWE-617
Affected product: Bellard Quickjs
Published: 2024-05-14
Last modified: 2026-06-17

Description

QuickJS commit 3b45d15 was discovered to contain an Assertion Failure via JS_FreeRuntime(JSRuntime *) at quickjs.c.

Frequently asked questions

What is CVE-2024-33263?: QuickJS commit 3b45d15 was discovered to contain an Assertion Failure via JS_FreeRuntime(JSRuntime *) at quickjs.c.
How severe is CVE-2024-33263?: CVE-2024-33263 has a CVSS 3.x base score of 4.0, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.
Is CVE-2024-33263 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-33263?: CVE-2024-33263 affects Bellard Quickjs. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-33263?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2024-33263 have an EU (EUVD) identifier?: Yes. CVE-2024-33263 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-31008.
When was CVE-2024-33263 published?: CVE-2024-33263 was published on 2024-05-14 and last updated on 2026-06-17.

References

https://github.com/bellard/quickjs/issues/277

Affected products (1)

cpe:2.3:a:bellard:quickjs:2024-03-23:*:*:*:*:*:*:*

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Other CWE-617 (Reachable Assertion) vulnerabilities

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CVE-2026-31739 — High (CVSS 8.8): In the Linux kernel, the following vulnerability has been resolved: crypto: tegra - Add missing CRYPTO_ALG_ASYNC The…
CVE-2020-12417 — High (CVSS 8.8): Due to confusion about ValueTags on JavaScript Objects, an object may pass through the type barrier, resulting in…
CVE-2020-6623 — High (CVSS 8.8): stb stb_truetype.h through 1.22 has an assertion failure in stbtt__cff_get_index.
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