High 8.7Published Nov 21, 2025

CVE-2025-65947thread-amount is Vulnerable to Resource Exhaustion (Memory and Handle Leaks) on Windows and macOS

Updated under an hour ago (Oct 27, 2026, 10:23 AM ET)

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Every CVE for jzeuzs thread-amount

Exploited in the last 30 days

thread-amount is a tool that gets the amount of threads in the current process. Prior to version 0.2.2, there are resource leaks when querying thread counts on Windows and Apple platforms. In Windows platforms, the thread_amount function calls CreateToolhelp32Snapshot but fails to close the returned HANDLE using CloseHandle. Repeated calls to this function will cause the handle count of the process to grow indefinitely, eventually leading to system instability or process termination when the handle limit is reached. In Apple platforms, the thread_amount function calls task_threads (via Mach kernel APIs) which allocates memory for the thread list. The function fails to deallocate this memory using vm_deallocate. Repeated calls will result in a steady memory leak, eventually causing the process to be killed by the OOM (Out of Memory) killer. This issue has been patched in version 0.2.2.

CVSS: 8.7 HIGH (v4.0, CNA)CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Weakness (CWE): CWE-400, CWE-772
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Deferred
Record last updated: Nov 24, 2025
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

jzeuzs thread-amount jzeuzs:thread_amount (from the name)	before 0.2.2	CNA record

References

References

https://github.com/jzeuzs/thread-amount/security/advisories/GHSA-jf9p-2fv9-2jp2	x-refsource-confirm
https://github.com/jzeuzs/thread-amount/pull/29	x-refsource-misc
https://github.com/jzeuzs/thread-amount/commit/28860d4a38286609cb884c13b5b7941edc2390e5	x-refsource-misc

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.