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NVD Vulnerability Details :
CVE-2026-34871
Analyzed
More InfoOfficial Page
Source-cve@mitre.org
View Known Exploited Vulnerability (KEV) details
Published At-01 Apr, 2026 | 19:16
Updated At-05 Jun, 2026 | 19:40

An issue was discovered in Mbed TLS before 3.6.6 and 4.x before 4.1.0 and TF-PSA-Crypto before 1.1.0. There is a Predictable Seed in a Pseudo-Random Number Generator (PRNG).

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary3.16.7MEDIUM
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Type: Secondary
Version: 3.1
Base score: 6.7
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
CPE Matches
Arm Limited
arm
>>mbed_tls>>Versions before 3.6.6(exclusive)
cpe:2.3:a:arm:mbed_tls:*:*:*:*:*:*:*:*
trustedfirmware
trustedfirmware
>>tf-psa-crypto>>Versions before 1.1.0(exclusive)
cpe:2.3:a:trustedfirmware:tf-psa-crypto:*:*:*:*:*:*:*:*
Weaknesses
CWE IDTypeSource
CWE-338Secondary134c704f-9b21-4f2e-91b3-4a467353bcc0
CWE ID: CWE-338
Type: Secondary
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://mbed-tls.readthedocs.io/en/latest/security-advisories/cve@mitre.org
Vendor Advisory
https://mbed-tls.readthedocs.io/en/latest/security-advisories/mbedtls-security-advisory-2026-03-dev-random/cve@mitre.org
Vendor Advisory
Hyperlink: https://mbed-tls.readthedocs.io/en/latest/security-advisories/
Source: cve@mitre.org
Resource:
Vendor Advisory
Hyperlink: https://mbed-tls.readthedocs.io/en/latest/security-advisories/mbedtls-security-advisory-2026-03-dev-random/
Source: cve@mitre.org
Resource:
Vendor Advisory
Change History
0Changes found
Details not found