CVE-2022-45195

Name: CVE-2022-45195
Creator: NVD / NIST
Published: 2022-11-12T19:15:10.707+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.3/10EPSS 0.58%

Last modified Jun 17, 2026

CVE-2022-45195 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. SimpleXMQ before 3.4.0, as used in SimpleX Chat before 4.2, does not apply a key derivation function to intended data, which can interfere with forward secrecy and can have other impacts if there is a compromise of a single private key. This occurs in the X3DH key exchange for the double ratchet protocol.. EPSS estimates a 0.58% chance of exploitation in the next 30 days.

Description

SimpleXMQ before 3.4.0, as used in SimpleX Chat before 4.2, does not apply a key derivation function to intended data, which can interfere with forward secrecy and can have other impacts if there is a compromise of a single private key. This occurs in the X3DH key exchange for the double ratchet protocol.

Metrics

CVSS 3.1

5.3/10

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

EPSS Probability

0.58%

43.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Simplex	Simplex Chat	< 4.2
Simplex	Simplexmq	< 3.4.0

References

https://github.com/simplex-chat/simplexmq/compare/v3.3.0...v3.4.0Release Notes, Third Party Advisory
https://github.com/simplex-chat/simplexmq/pull/548Patch, Third Party Advisory
https://github.com/trailofbits/publications/blob/master/reviews/SimpleXChat.pdfExploit, Technical Description, Third Party Advisory
https://simplex.chat/blog/20221108-simplex-chat-v4.2-security-audit-new-website.htmlRelease Notes, Vendor Advisory
https://github.com/simplex-chat/simplexmq/compare/v3.3.0...v3.4.0Release Notes, Third Party Advisory
https://github.com/simplex-chat/simplexmq/pull/548Patch, Third Party Advisory
https://github.com/trailofbits/publications/blob/master/reviews/SimpleXChat.pdfExploit, Technical Description, Third Party Advisory
https://simplex.chat/blog/20221108-simplex-chat-v4.2-security-audit-new-website.htmlRelease Notes, Vendor Advisory

Timeline

Published: Nov 12, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-45195?

How severe is CVE-2022-45195?

CVE-2022-45195 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 0.58% probability of exploitation in the next 30 days.

How do I fix CVE-2022-45195?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-45195?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST