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CVE-2026-73064

LOW
2.9
CVSS Score
Published: September 24, 2026 at 02:58 PM UTC
Updated: September 24, 2026 at 09:17 PM UTC
1 product affected across 1 vendorMbed TLS

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Severity
LOW2.9
Exploit prediction
EPSS 0.1%
SSVC
No known exploit

Description

In Mbed TLS 3.2.0 though 3.6.6 and 4.0.0 through 4.1.0, an attacker who can cause an entropy source to fail can remove or inject bytes into the start of the TLS stream. This only affects TLS 1.3 servers.

Affected

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

Mbed TLS· Trustedfirmware
60%
3.2.0 ≤ v < 3.6.74.0.0 ≤ v < 4.1.13.2.04.0.0
Affected range stops below 3.6.7, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.1.1, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (2)

Source: cverecord
https://github.com/Mbed-TLS/mbedtls
Source: cverecord
https://mbed-tls.readthedocs.io/en/latest/security-advisories/mbedtls-security-advisory-2026-07-random-generator-fault-tls-integrity/

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

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

CVSS

2.9LOWmitre
Attack Vector
LOCAL
Complexity
HIGH
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusAWAITING ANALYSIS
CWE
CWE-394

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