CVE-2026-25835 — Incorrect Usage of Seeds in Pseudo-Random Number Generator in ARM Mbed TLS

CWE-335 — Incorrect Usage of Seeds in Pseudo-Random Number Generator9 documents7 sources
Severity
7.7HIGHNVD
EPSS
0.0%
top 97.35%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
ARM Mbed TLSARM Tf-psa-crypto
Timeline
PublishedApr 1
Latest updateApr 2

Description

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

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:NExploitability: 2.5 | Impact: 5.2

Affected Packages2 packages

▶NVDarm/mbed_tls2.18.0 — 3.6.6+1
▶NVDarm/tf-psa-crypto< 1.1.0

🔴Vulnerability Details

4
OSV
CVE-2026-25835: (Mbed TLS before 3↗2026-04-02
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GHSA
GHSA-76mm-6xm9-hwpx: Mbed TLS before 3↗2026-04-01
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OSV
CVE-2026-25835: Mbed TLS before 3↗2026-04-01
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CVEList
CVE-2026-25835: Mbed TLS before 3↗2026-04-01
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📋Vendor Advisories

1
Debian
CVE-2026-25835: mbedtls - Mbed TLS before 3.6.6 and TF-PSA-Crypto before 1.1.0 misuse seeds in a Pseudo-Ra...↗2026
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🕵️Threat Intelligence

1
Wiz
CVE-2026-25835 Impact, Exploitability, and Mitigation Steps | Wiz↗
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💬Community

2
Bugzilla
CVE-2026-25835 micropython: PSA random generator cloning [fedora-all]↗2026-04-01
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Bugzilla
CVE-2026-25835 mbedtls: PSA random generator cloning [fedora-all]↗2026-04-01
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CVE-2026-25835 — ARM Mbed TLS vulnerability | cvebase