CVE-2025-63927: airpig2011 IEC104 thru Commit be6d841 (2019-07-08) · Heap-use-after-free Vulnerability Exists
Source GCVE Database
Not known to be exploited · CVSS 4.0 Medium.
Data as of 13 Nov 2026, 18:30 UTC
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:LExploitation evidence
Disclosed: evidence found.
CVE published 12 Nov 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 13 Nov 2026.
What to do
AI-suggested
Until a fix is available, users should consider limiting local access to affected systems and avoid running untrusted code that could trigger the vulnerability.
Description
A heap-use-after-free vulnerability in airpig2011 IEC104 exists through commit be6d841 (2019-07-08). The flaw occurs during multi-threaded client execution when the function Iec10x_Scheduled accesses memory that has already been freed. This can cause program crashes or undefined behavior and may be exploited to cause denial-of-service or memory corruption.