CVE-2025-63927 Use after free in n/a
A heap-use-after-free in the IEC104 library allows attackers to cause crashes or potential code execution via multi-threaded client execution.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-63927?
CVE-2025-63927 is a medium-severity use after free vulnerability in n/a, published on 12 Nov 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official 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.
Weakness: CWE-122
Which versions are affected by CVE-2025-63927?
It affects 1 product.
Products include Airpig2011 Iec104.
How do I fix CVE-2025-63927?
No fix has been published for CVE-2025-63927 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2025-63927 being exploited?
There is no known exploitation of CVE-2025-63927 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-jwc4-5hfq-4hfm.