CVE-2026-22319 Stack-Based Buffer Overflow in File Install Parameter Handling
A high-privileged attacker can cause a denial of service by sending oversized POST parameters that trigger a stack-based buffer overflow in the file installation workflow.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-22319?
CVE-2026-22319 is a medium-severity memory corruption vulnerability in Phoenix Contact FL NAT 2008, published on 18 Mar 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
A stack-based buffer overflow in the device's file installation workflow allows a high-privileged attacker to send oversized POST parameters that overflow a fixed-size stack buffer within an internal process, resulting in a DoS attack.
Weakness: CWE-121
Which versions are affected by CVE-2026-22319?
How do I fix CVE-2026-22319?
No fix has been published for CVE-2026-22319 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-22319 being exploited?
There is no known exploitation of CVE-2026-22319 in the wild and no public exploit code.
Sources
Also known as GHSA-7hqw-92qf-g6mp.