Description
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.
Affected products
airpig2011: iec104
References2
- github.com/airpig2011/IEC104/issues/20 Exploit
- songsong.host/mybugs/CVE-2025-63927.html ExploitThird Party Advisory
Metrics
- CVSS 3.1
-
4.0
MEDIUM
Score source: CNA
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L - EPSS — exploit probability
- 0% percentile: 11 · as of 10 November 2026
- CWE
- CWE-122
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