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

  - Mbed TLS before 2.28.10 and 3.x before 3.6.3, on the client side, accepts servers that have trusted
    certificates for arbitrary hostnames unless the TLS client application calls mbedtls_ssl_set_hostname.
    (CVE-2025-27809)

  - Mbed TLS before 2.28.10 and 3.x before 3.6.3, in some cases of failed memory allocation or hardware
    errors, uses uninitialized stack memory to compose the TLS Finished message, potentially leading to
    authentication bypasses such as replays. (CVE-2025-27810)

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

  - An issue was discovered in Mbed TLS before 2.28.9 and 3.x before 3.6.1, in which the user-selected
    algorithm is not used. Unlike previously documented, enabling MBEDTLS_PSA_HMAC_DRBG_MD_TYPE does not cause
    the PSA subsystem to use HMAC_DRBG: it uses HMAC_DRBG only when MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG and
    MBEDTLS_CTR_DRBG_C are disabled. (CVE-2024-45157)

  - Mbed TLS before 2.28.10 and 3.x before 3.6.3, on the client side, accepts servers that have trusted
    certificates for arbitrary hostnames unless the TLS client application calls mbedtls_ssl_set_hostname.
    (CVE-2025-27809)

  - Mbed TLS before 2.28.10 and 3.x before 3.6.3, in some cases of failed memory allocation or hardware
    errors, uses uninitialized stack memory to compose the TLS Finished message, potentially leading to
    authentication bypasses such as replays. (CVE-2025-27810)

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 2.28.10 and 3.x before 3.6.3, on the client side, accepts servers that have trusted     certificates for arbitrary hostnames unless the TLS client application calls mbedtls_ssl_set_hostname.
    (CVE-2025-27809)

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

The version of Tencent Linux installed on the remote TencentOS Server 4 host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the TSSA-2025:0337 advisory.

    Package updates are available for TencentOS Server 4 that fix the following vulnerabilities:

    CVE-2025-27810:
    Mbed TLS before 2.28.10 and 3.x before 3.6.3, in some cases of failed memory allocation or hardware     errors, uses uninitialized stack memory to compose the TLS Finished message, potentially leading to     authentication bypasses such as replays.

    CVE-2025-27809:
    Mbed TLS before 2.28.10 and 3.x before 3.6.3, on the client side, accepts servers that have trusted     certificates for arbitrary hostnames unless the TLS client application calls mbedtls_ssl_set_hostname.

Tenable has extracted the preceding description block directly from the Tencent Linux 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
424191	Alpine: multiple mbedtls packages: security update to 3.6.3-r0	Tenable Cloud Security	Alpine Linux Local Security Checks	4/4/2025	7/2/2026	medium
424772	Alpine: multiple mbedtls packages: security update to 2.28.10-r0	Tenable Cloud Security	Alpine Linux Local Security Checks	4/6/2025	7/2/2026	medium
424772	Alpine: multiple mbedtls packages: security update to 2.28.10-r0	Tenable Self-Hosted Container Security	Alpine Linux Local Security Checks	4/6/2025	7/2/2026	medium
426483	Alpine: multiple mbedtls2 packages: security update to 2.28.10-r0	Tenable Cloud Security	Alpine Linux Local Security Checks	5/16/2025	7/2/2026	medium
424191	Alpine: multiple mbedtls packages: security update to 3.6.3-r0	Tenable Self-Hosted Container Security	Alpine Linux Local Security Checks	4/4/2025	7/2/2026	medium
426483	Alpine: multiple mbedtls2 packages: security update to 2.28.10-r0	Tenable Self-Hosted Container Security	Alpine Linux Local Security Checks	5/16/2025	7/2/2026	medium
247765	Linux Distros Unpatched Vulnerability : CVE-2025-27809	Nessus	Misc.	8/10/2025	7/25/2026	medium
276298	TencentOS Server 4: mbedtls (TSSA-2025:0337)	Nessus	Tencent Local Security Checks	11/20/2025	12/4/2025	medium

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