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CVE-2021-34600

Telenot complex: Insecure AES Key Generation

MEDIUM
5.5
CVSS Score
Published: January 20, 2022 at 11:40 AM UTC
Updated: June 17, 2026 at 03:56 AM UTC
2 products affected across 2 vendorsCompasxCompasX

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.4%

Description

Telenot CompasX versions prior to 32.0 use a weak seed for random number generation leading to predictable AES keys used in the NFC tags used for local authorization of users. This may lead to total loss of trustworthiness of the installation.

Affected

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

Compasx· Telenot
95%
v < 32.0
Affected range stops below 32.0, so it looks safe — our inference, not a vendor statement
CompasX· Telenot Electronic
60%
v < 32.0
Affected range stops below 32.0, 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 (1)

x_refsource_CONFIRMExploitThird Party Advisory
Source: [email protected]
https://www.x41-dsec.de/lab/advisories/x41-2021-003-telenot-complex-insecure-keygen/

CVSS

5.5MEDIUMCERTVDE
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-335

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