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CVE-2024-45157

MEDIUM

5.1

CVSS Score

Published: September 5, 2024 at 12:00 AM UTC

Updated: June 17, 2026 at 07:53 AM UTC

1 product affected across 1 vendorMbed TLS

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Severity

MEDIUM5.1

Exploit prediction

EPSS 0.2%

SSVC

No known exploit

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Mbed TLS · Trustedfirmware

95%

2.26.0 ≤ v < 2.28.93.2.0 ≤ v < 3.6.1

Affected range stops below 2.28.9, so it looks safe — our inference, not a vendor statement

Affected range stops below 3.6.1, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (3)

Release Notes

Source: [email protected]

https://github.com/Mbed-TLS/mbedtls/releases/

Vendor Advisory

Source: [email protected]

https://mbed-tls.readthedocs.io/en/latest/security-advisories/

Vendor Advisory

Source: [email protected]

https://mbed-tls.readthedocs.io/en/latest/security-advisories/mbedtls-security-advisory-2024-08-1/

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.1MEDIUMCISA-ADP

Attack Vector: LOCAL
Complexity: HIGH
Privileges: NONE
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: HIGH
Integrity: NONE
Availability: NONE

Vector?

Quick Info

StatusMODIFIED

CWE

NVD-CWE-noinfoCWE-696

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