Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2022-45195

20
FAUCET Score

CVE-2022-45195 affects SimpleXMQ before version 3.4.0 and SimpleX Chat before version 4.2. The vulnerability stems from a failure to properly apply a key derivation function during the X3DH key exchange for the double ratchet protocol. This flaw, rated Medium severity (CVSS 5.3), has a high impact on confidentiality if a single private key is compromised, potentially interfering with forward secrecy. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 4.2CPE matchmatch criteria
cpe:2.3:a:simplex:simplex_chat:*:*:*:*:*:*:*:*
< 3.4.0CPE matchmatch criteria
cpe:2.3:a:simplex:simplexmq:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.3MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
1.6
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.58%
Probability of exploitation in next 30 days
EPSS Percentile
44.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0058 is in the 35th percentile among its peer group of 1,425 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

github.com / simplex-chat/simplexmq/compare/v3.3.0...v3.4.0
Release NotesThird Party Advisory
github.com / simplex-chat/simplexmq/pull/548
PatchThird Party Advisory
github.com / trailofbits/publications/blob/master/reviews/SimpleXChat.pdf
ExploitTechnical DescriptionThird Party Advisory
simplex.chat / blog/20221108-simplex-chat-v4.2-security-audit-new-website.html
Release NotesVendor Advisory