CVE-2018-25427 | Arm Whois 3.11 contains a stack-based buffer overflow vulner… | CVSS 9.8 CRITICAL

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.

Metadata

CVE ID: CVE-2018-25427
State: PUBLISHED
Assigner: VulnCheck
Reserved: 2026-05-31 12:54 UTC
Published: 2026-06-01 21:00 UTC
Last updated: 2026-06-02 13:15 UTC
Primary CWE: CWE-121
Stack-based Buffer Overflow
Vendor / Product: Armcode / Arm Whois
Sources: cve.org · NVD

Severity & Metrics

9.8 CRITICAL CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

SSVC — CISA Coordinator

Exploitation: none
Automatable: yes
Tech. Impact: total

Affected products (1)

Vendor	Product	Platform	Versions
Armcode	Arm Whois	—	3.11

Weakness (CWE)

CWE	Source	Description
CWE-121	cna	Stack-based Buffer Overflow

CVSS scores (2)

Score	Severity	Version	Source	Vector
9.8	CRITICAL	3.1	cna	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.3	CRITICAL	4.0	cna	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

References (4)

ExploitDB-45796 https://www.exploit-db.com/exploits/45796
Official Product Homepage http://www.armcode.com/
Product Reference http://www.armcode.com/downloads/arm-whois.exe
VulnCheck Advisory: Arm Whois 3.11 Buffer Overflow via SEH Overwrite https://www.vulncheck.com/advisories/arm-whois-buffer-overflow-via-seh-overwrite