Buffer overflow in Armcode Arm Whois
CVE-2018-25423
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.2 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.001 (2.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 3rd percentile — 2.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.001 · newest: 0.001 · change: 0.000
Affected products
- Armcode Arm Whois — versions 3.11
Weakness classification (CWE)
References
- www.exploit-db.com/exploits/45762 (exploit)
- www.armcode.com/ (product)
- www.armcode.com/downloads/arm-whois.exe (product)
- www.vulncheck.com/advisories/arm-whois-denial-of-service-via-buffer-overflow (third-party-advisory)
Frequently asked questions
- What is CVE-2018-25423?
- CVE-2018-25423 is a medium-severity vulnerability in Armcode Arm Whois, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 6.2/10. Published 2026-05-30.
- How severe is CVE-2018-25423?
- Medium severity. CVSS v3 base score is 6.2 out of 10.