CVE-2026-115794 Alarm data length not validated against received frame length
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-115794?
CVE-2026-115794 is a low-severity vulnerability in RT-Labs P-Net, published on 29 Oct 2026.
Official description
P-Net before 1.0.3 passes the application alarm callback a data length derived from the variable part length field of a received RTA alarm frame without checking it against the length of the received frame. A short frame can make the callback receive a length of up to 65507 bytes. An application that copies the reported number of bytes reads past the end of the receive buffer. The attacker must have established an Application Relationship and requires ADJACENT network access. Applications that do not use the alarm data are not affected.
Weakness: CWE-130
Which versions are affected by CVE-2026-115794?
How do I fix CVE-2026-115794?
No fix has been published for CVE-2026-115794 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-115794 being exploited?
There is no known exploitation of CVE-2026-115794 in the wild and no public exploit code.
Sources
Also known as GHSA-vmq4-4rhp-6cqg.