How severe is CVE-2026-3184?

CVE-2026-3184 has a CVSS 3.x base score of 3.7, rated low severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2026-3184 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (35th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-3184?

CVE-2026-3184 primarily affects Redhat Hardened Images. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-3184?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-3184 have an EU (EUVD) identifier?

Yes. CVE-2026-3184 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-18817.

When was CVE-2026-3184 published?

CVE-2026-3184 was published on 2026-04-03 and last updated on 2026-06-17.

CVE-2026-3184

CVE-2026-3184 is a low-severity vulnerability in Redhat Hardened Images with a CVSS 3.x base score of 3.7. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-289.

Key facts

Severity: Low (CVSS 3.x base score 3.7)
EPSS exploit prediction: 0% (35th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-18817
Weakness: CWE-289
Affected product: Redhat Hardened Images
Published: 2026-04-03
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2026-3184?: 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.
How severe is CVE-2026-3184?: CVE-2026-3184 has a CVSS 3.x base score of 3.7, rated low severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2026-3184 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (35th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-3184?: CVE-2026-3184 primarily affects Redhat Hardened Images. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-3184?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-3184 have an EU (EUVD) identifier?: Yes. CVE-2026-3184 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-18817.
When was CVE-2026-3184 published?: CVE-2026-3184 was published on 2026-04-03 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:kernel:util-linux:-:*:*:*:*:*:*:*
cpe:2.3:a:redhat:hardened_images:-:*:*:*:*:*:*:*

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