There are packages installed that are affected by multiple vulnerabilities referenced in the following CVEs:

  - Mbed TLS 3.5.0 to 3.6.5 fixed in 3.6.6 and 4.1.0 has a buffer overflow in the x509_inet_pton_ipv6()
    function (CVE-2026-25833)

  - Mbed TLS v3.3.0 up to 3.6.5 and 4.0.0 allows Algorithm Downgrade. (CVE-2026-25834)

  - Mbed TLS before 3.6.6 and TF-PSA-Crypto before 1.1.0 misuse seeds in a Pseudo-Random Number Generator
    (PRNG). (CVE-2026-25835)

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the d77bd2f5-34f0-11f1-bc6d-3c7c3fba4204 advisory.

    https://mbed-tls.readthedocs.io/en/latest/security-advisories/ reports:

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

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

The remote Fedora 42 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-10443c65e3 advisory.

    Update to 3.6.6


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

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

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

  - Mbed TLS before 3.6.6 and TF-PSA-Crypto before 1.1.0 misuse seeds in a Pseudo-Random Number Generator     (PRNG). (CVE-2026-25835)

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

The remote Fedora 43 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-8c332fbf00 advisory.

    Update to 3.6.6

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

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

The remote SUSE Linux SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:1952-1 advisory.

    This update for ovmf fixes the following issues

    - CVE-2026-25833: mbedtls: buffer underflow in x509_inet_pton_ipv6() (bsc#1261476).
    - CVE-2026-25834: mbedtls: Algorithm downgrade vulnerability (bsc#1261477).
    - CVE-2026-25835: mbedtls: PSA random generator cloning (bsc#1261478).
    - CVE-2026-34874: mbedtls: NULL pointer dereference when setting a distinguished name (bsc#1261469).

    Changes for ovmf:

    - Update mbedtls to 3.6.6.

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

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

The remote Fedora 44 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-3a9536df40 advisory.

    Update to 3.6.6

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

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

ID	Name	Product	Family	Published	Updated	Severity
439593	Alpine: multiple mbedtls packages: security update to 3.6.6-r0	Tenable Self-Hosted Container Security	Alpine Linux Local Security Checks	4/1/2026	7/2/2026	high
439593	Alpine: multiple mbedtls packages: security update to 3.6.6-r0	Tenable Cloud Security	Alpine Linux Local Security Checks	4/1/2026	7/2/2026	high
305996	FreeBSD : Mbed TLS -- vulnerabilities (d77bd2f5-34f0-11f1-bc6d-3c7c3fba4204)	Nessus	FreeBSD Local Security Checks	4/11/2026	4/11/2026	critical
307409	Fedora 42 : mbedtls (2026-10443c65e3)	Nessus	Fedora Local Security Checks	4/17/2026	4/17/2026	critical
304770	Linux Distros Unpatched Vulnerability : CVE-2026-25835	Nessus	Misc.	4/3/2026	9/12/2026	high
307056	Fedora 43 : mbedtls (2026-8c332fbf00)	Nessus	Fedora Local Security Checks	4/17/2026	4/17/2026	critical
315270	SUSE SLES15 Security Update : ovmf (SUSE-SU-2026:1952-1)	Nessus	SuSE Local Security Checks	5/19/2026	5/19/2026	high
310670	Fedora 44 : mbedtls (2026-3a9536df40)	Nessus	Fedora Local Security Checks	4/28/2026	4/28/2026	critical

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