CVE-2025-63927

4.0 mediumEPSS 0.2%

Medium (4.0) in airpig2011 iec104. EPSS 0.2% chance of exploitation in the next 30 days.

A heap-use-after-free vulnerability exists in airpig2011 IEC104 thru Commit be6d841 (2019-07-08). During multi-threaded client execution, the function Iec10x_Scheduled can access memory that has already been freed, potentially causing program crashes or undefined behavior. This may be exploited to trigger a denial-of-service or memory corruption.

Severity

CVSS 3.1

4.0 medium

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

EPSS: 0.2% chance of exploitation in the next 30 days; higher than 11% of CVEs (scores of 2026-10-31)
CWE: CWE-122
Published: 2025-11-12
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

airpig2011:iec104

References

https://github.com/airpig2011/IEC104/issues/20
https://songsong.host/mybugs/CVE-2025-63927.html

Check your stack JSON