CVE-2018-25423 — Arm Whois 3

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 condit

01What is this vulnerability?

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.

02Affected products

No structured affected-product list available — see references below for vendor advisories.

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2026-05-30T16:17:03.577
• Last modified: 2026-07-22T07:10:00.107

09References

• www.armcode.com — http://www.armcode.com/
• www.armcode.com — http://www.armcode.com/downloads/arm-whois.exe
• www.exploit-db.com — https://www.exploit-db.com/exploits/45762
• www.vulncheck.com — https://www.vulncheck.com/advisories/arm-whois-denial-of-service-via-buffer-over…