CVE-2018-25423 Arm Whois 3.11 Denial of Service via Buffer Overflow
Local attackers can crash the Arm Whois application by supplying oversized input strings, causing a denial of service.
- 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-2018-25423?
CVE-2018-25423 is a medium-severity memory corruption vulnerability in Armcode Arm Whois, published on 30 May 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Arm Whois 3.11 contains a buffer overflow vulnerability that allows local attackers to crash the application by supplying an oversized input string. Attackers can paste a malicious buffer of 700 bytes into the IP address or domain input field to trigger a denial of service condition.
Weakness: CWE-120
Which versions are affected by CVE-2018-25423?
How do I fix CVE-2018-25423?
No fix has been published for CVE-2018-25423 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-2018-25423 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2018-25423 exists.
Sources
Also known as GHSA-mv86-8f26-gw3x.