An issue was discovered in Midnight Commander through 4.8.26. When establishing an SFTP connection, the fingerprint of the server is neither checked nor displayed. As a result, a user connects to the server without the ability to verify its authenticity.

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-093026 advisory.

    An issue was discovered in Midnight Commander through 4.8.26. When establishing an SFTP connection, the     fingerprint of the server is neither checked nor displayed. As a result, a user connects to the server     without the ability to verify its authenticity.

Tenable has extracted the preceding description block directly from the Unity Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

An update of the mc package has been released.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - An issue was discovered in Midnight Commander through 4.8.26. When establishing an SFTP connection, the     fingerprint of the server is neither checked nor displayed. As a result, a user connects to the server     without the ability to verify its authenticity. (CVE-2021-36370)

Note that Nessus relies on the presence of the package as reported by the vendor.

The remote Ubuntu 16.04 ESM / 18.04 ESM / 20.04 ESM host has packages installed that are affected by a vulnerability as referenced in the USN-5160-1 advisory.

    It was discovered that Midnight Commander would not check server fingerprints when establishing an SFTP     connection. If a remote attacker were able to intercept communications this flaw could be exploited to     impersonate the SFTP server.

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The version of mc installed on the remote host is prior to 4.8.29-1. It is, therefore, affected by a vulnerability as referenced in the ALAS2-2023-2147 advisory.

    An issue was discovered in Midnight Commander through 4.8.26. When establishing an SFTP connection, the     fingerprint of the server is neither checked nor displayed. As a result, a user connects to the server     without the ability to verify its authenticity. (CVE-2021-36370)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SUSE15 host has packages installed that are affected by a vulnerability as referenced in the openSUSE-SU-2022:0061-1 advisory.

  - An issue was discovered in Midnight Commander through 4.8.26. When establishing an SFTP connection, the     fingerprint of the server is neither checked nor displayed. As a result, a user connects to the server     without the ability to verify its authenticity. (CVE-2021-36370)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Type	Severity
341234	Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: mc (UTSA-2026-093026)	Nessus	Unity Linux Local Security Checks	Local	high
275319	Photon OS 4.0: Mc PHSA-2025-4.0-0902	Nessus	PhotonOS Local Security Checks	Local	high
223970	Linux Distros Unpatched Vulnerability : CVE-2021-36370	Nessus	Misc.	Local	high
183147	Ubuntu 16.04 ESM / 18.04 ESM / 20.04 ESM : Midnight Commander vulnerability (USN-5160-1)	Nessus	Ubuntu Local Security Checks	Local	high
178513	Amazon Linux 2 : mc (ALAS-2023-2147)	Nessus	Amazon Linux Local Security Checks	Local	high
158507	openSUSE 15 Security Update : mc (openSUSE-SU-2022:0061-1)	Nessus	SuSE Local Security Checks	Local	high

Detections

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CVE-2021-36370

high

Tenable Plugins

high

high

high

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high

high