PatchTheCVECVE-2025-62492: A vulnerability stemming from floating-point arithmetic precision errors exists in the QuickJS engine's implem
CVE-2025-62492 is a medium-severity flaw (CVSS 6.5) affecting quickjs. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
A vulnerability stemming from floating-point arithmetic precision errors exists in the QuickJS engine's implementation of TypedArray.prototype.indexOf() when a negative fromIndex argument is supplied. * The fromIndex argument (read as a double variable, $d$) is used to calculate the starting position for the search. * If d is negative, the index is calculated relative to the end of the array by adding the array's length (len) to d: $$
Why this priority
- Public exploit reference
A fixed release or distro patch exists.
Risk facts
| CVSS score | 6.5 (Medium) |
| Attack vector | Adjacent network |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 0.4% (top 67%) |
| CISA exploited list | No |
| Weakness | CWE-125 |
| Published | 2025-10-16 |
| Last modified | 2026-10-19 |
Last updated 2026-10-19 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2025-62492?
quickjs: upgrade to 2025-09-13. Exact commands for each OS are on this page.
Is CVE-2025-62492 being exploited?
CVE-2025-62492 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2025-62492 affect?
CVE-2025-62492 affects quickjs. Severity is medium (CVSS 6.5). A vulnerability stemming from floating-point arithmetic precision errors exists in the QuickJS engine's implementation of TypedArray.prototype.indexOf() when a negative fromIndex argument is supplied. * The fromIndex argument (read as a
How urgent is CVE-2025-62492?
Priority 36/100. Public exploit reference
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