NULL pointer dereference in Airpig2011 Iec104
CVE-2025-63929
A null pointer dereference vulnerability exists in airpig2011 IEC104 thru Commit be6d841 (2019-07-08). When multiple threads enqueue elements concurrently via IEC10X_PrioEnQueue, the function may dereference a null or freed queue pointer, resulting in a segmentation fault and potential denial-of-service.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.003 (25.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 26th percentile — 25.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
Weakness classification (CWE)
References
- github.com/airpig2011/IEC104/issues/21 (Exploit, Issue Tracking)
- songsong.host/mybugs/CVE-2025-63929.html (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2025-63929?
- CVE-2025-63929 is a high-severity vulnerability in Airpig2011 Iec104, classified under NULL Pointer Dereference. CVSS score: 7.5/10. Published 2025-11-12.
- How severe is CVE-2025-63929?
- High severity. CVSS v3 base score is 7.5 out of 10.