How severe is CVE-2021-3494?

CVE-2021-3494 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2021-3494 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (29th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-3494?

CVE-2021-3494 affects Theforeman Foreman. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-3494?

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

When was CVE-2021-3494 published?

CVE-2021-3494 was published on 2021-04-26 and last updated on 2026-06-17.

CVE-2021-3494

CVE-2021-3494 is a medium-severity vulnerability in Theforeman Foreman with a CVSS 3.x base score of 5.9. 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-319.

Key facts

Severity: Medium (CVSS 3.x base score 5.9)
CVSS v2: 4.3
EPSS exploit prediction: 0% (29th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-319
Affected product: Theforeman Foreman
Published: 2021-04-26
Last modified: 2026-06-17

Description

A smart proxy that provides a restful API to various sub-systems of the Foreman is affected by the flaw which can cause a Man-in-the-Middle attack. The FreeIPA module of Foreman smart proxy does not check the SSL certificate, thus, an unauthenticated attacker can perform actions in FreeIPA if certain conditions are met. The highest threat from this flaw is to system confidentiality. This flaw affects Foreman versions before 2.5.0.

Frequently asked questions

What is CVE-2021-3494?: A smart proxy that provides a restful API to various sub-systems of the Foreman is affected by the flaw which can cause a Man-in-the-Middle attack. The FreeIPA module of Foreman smart proxy does not check the SSL certificate, thus, an unauthenticated attacker can perform actions in FreeIPA if certain conditions are met. The highest threat from this flaw is to system confidentiality. This flaw affects Foreman versions before 2.5.0.
How severe is CVE-2021-3494?: CVE-2021-3494 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2021-3494 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (29th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-3494?: CVE-2021-3494 affects Theforeman Foreman. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-3494?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-3494 published?: CVE-2021-3494 was published on 2021-04-26 and last updated on 2026-06-17.

References

https://bugzilla.redhat.com/show_bug.cgi?id=1948005

Affected products (1)

cpe:2.3:a:theforeman:foreman:*:*:*:*:*:*:*:*

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