Alpine: multiple mbedtls packages: security update to 3.6.6-r0

high Tenable Cloud Security Plugin ID 439593

Description

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)

Solution

Update the mbedtls library and its related packages to version 3.6.6-r0 or later.

See Also

https://security.alpinelinux.org/vuln/CVE-2026-25833

https://security.alpinelinux.org/vuln/CVE-2026-25834

https://security.alpinelinux.org/vuln/CVE-2026-25835

Plugin Details

Severity: High

ID: 439593

Version: Revision 1.12

Type: Local

Published: 4/1/2026

Updated: 7/2/2026

Supported Sensors: Agentless Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Medium

Score: 4.3

Percentile: 53.65

CVSS v3

Risk Factor: High

Base Score: 7.7

Temporal Score: 6.7

Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

CVSS Score Source: CVE-2026-25835

Vulnerability Information

Exploit Ease: No known exploits are available

Reference Information

CVE: CVE-2026-25833, CVE-2026-25834, CVE-2026-25835