Buffer overflow in Armcode Arm Whois
CVE-2018-25427
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.009 (58.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 59th percentile — 58.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000
Affected products
- Armcode Arm Whois — versions 3.11
Weakness classification (CWE)
References
- www.exploit-db.com/exploits/45796 (exploit)
- www.armcode.com/ (product)
- www.armcode.com/downloads/arm-whois.exe (product)
- www.vulncheck.com/advisories/arm-whois-buffer-overflow-via-seh-overwrite (third-party-advisory)
Frequently asked questions
- What is CVE-2018-25427?
- CVE-2018-25427 is a critical-severity vulnerability in Armcode Arm Whois, classified under Stack-based Buffer Overflow. CVSS score: 9.8/10. Published 2026-06-01.
- How severe is CVE-2018-25427?
- Critical severity. CVSS v3 base score is 9.8 out of 10.