CVE-2018-25427: Arm Whois 3.11 Buffer Overflow via SEH Overwrite

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.9% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-06-01 · updated 2026-07-22
Weakness: CWE-121

Description

Arm Whois 3.11 contains a stack-based buffer overflow vulnerability that allows remote attackers to execute arbitrary code by supplying oversized input to the IP address or domain field. Attackers can craft malicious input exceeding 658 bytes with shellcode to overwrite the structured exception handler and gain command execution when the application processes the input.

Affected products

Armcode Arm Whois: 3.11

References

http://www.armcode.com/
http://www.armcode.com/downloads/arm-whois.exe
https://www.exploit-db.com/exploits/45796
https://www.vulncheck.com/advisories/arm-whois-buffer-overflow-via-seh-overwrite

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