Vulnerability · Published Apr 1, 2026 · Assigned by mitre
CVE-2026-25835
High 7.7
In plain English
A high-severity security flaw in the mbedtls package (Alpine). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 7% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)7.7High
Exploit odds (30 days)0.2%top 92.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Mbed TLS before 3.6.6 and TF-PSA-Crypto before 1.1.0 misuse seeds in a Pseudo-Random Number Generator (PRNG).
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.20 | mbedtls | 3.6.6-r0 | ALPINE-CVE-2026-25835 |
| Alpine:v3.21 | mbedtls | 3.6.6-r0 | ALPINE-CVE-2026-25835 |
| Alpine:v3.22 | mbedtls | 3.6.6-r0 | ALPINE-CVE-2026-25835 |
| Alpine:v3.23 | mbedtls | 3.6.6-r0 | ALPINE-CVE-2026-25835 |
| Alpine:v3.24 | mbedtls | 3.6.6-r0 | ALPINE-CVE-2026-25835 |
| Alpine:v3.24 | mbedtls3 | 3.6.6-r0 | ALPINE-CVE-2026-25835 |
| Debian:12 | mbedtls | no fix listed | DEBIAN-CVE-2026-25835 |
| Debian:13 | mbedtls | 3.6.6-0.1~deb13u1 | DEBIAN-CVE-2026-25835 |
| Debian:14 | mbedtls | 3.6.6-0.1 | DEBIAN-CVE-2026-25835 |
| Ubuntu:25.10 | mbedtls | no fix listed | UBUNTU-CVE-2026-25835 |
| Ubuntu:26.04:LTS | mbedtls | no fix listed | UBUNTU-CVE-2026-25835 |
| Ubuntu:26.10 | mbedtls | no fix listed | UBUNTU-CVE-2026-25835 |
Affected products (as reported)
Weakness: CWE-335 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N