CVE•Published 2026-04-03•Modified 2026-05-01•0 articles on news•6 live references•NVD data

CVE-2026-3184Kernel · Util-linux

Vulnerability data via NVD (ingested)

CVSS v3.1

3.7

LOW

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

EPSS percentile

Exploit Prediction Scoring System · top 72% of all CVEs

Weaknesses (CWE)

CWE-289Authentication Bypass by Alternate Name

Description

A flaw was found in util-linux. Improper hostname canonicalization in the `login(1)` utility, when invoked with the `-h` option, can modify the supplied remote hostname before setting `PAM_RHOST`. A remote attacker could exploit this by providing a specially crafted hostname, potentially bypassing host-based Pluggable Authentication Modules (PAM) access control rules that rely on fully qualified domain names. This could lead to unauthorized access.

Timeline

Published 2026-04-03

Modified 2026-05-01

External references

NVD MITRE Exploit-DB GitHub PoC Sploitus VulnCheck

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).

Shodan · vuln tag0 hosts

vuln:CVE-2026-3184

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · product

product:"Kernel Util-linux"

All exposed Kernel Util-linux instances — cross-reference with the CVE's affected-version range.

Shodan · banner/body mention

http.html:"Util-linux"

HTTP body or banner mentions "Util-linux" — catches deploys Shodan didn't identify as a product.

More intel sources (5)

Shodan report

vuln:CVE-2026-3184