Is CVE-2022-45195 in the CISA KEV catalog?

No. CVE-2022-45195 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2022-45195?

CVE-2022-45195 has a CVSS v3 base score of 5.3 (MEDIUM).

What is the EPSS score for CVE-2022-45195?

CVE-2022-45195 has an EPSS score of 0.58% (44th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2022-45195?

Upgrade simplex chat to 4.2 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2022-45195

MEDIUM

5.3

CVSS v3

NVD

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.

CWE-327

How to fix

Remediation Available

simplex chatNVD

Affected:< 4.2Fixed in:4.2CVE-2022-45195derived from NVD

simplexmqNVD

Affected:< 3.4.0Fixed in:3.4.0CVE-2022-45195derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityHigh

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityNone

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

Exploit Intelligence

0.58%probability of exploitation in 30 days

44thpercentile

Moderate risk: more likely to be exploited than 44% of all known CVEs.

References

Patch1

github.com

Exploit1

github.com

Vendor Advisory1

simplex.chat

Third-Party Advisory1

github.com

Related Vulnerabilities

Other CWE-327 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2015-2808	Low	3.7	74%	-	Fix
CVE-2023-34039	Critical	9.8	64%	-	Fix
CVE-2016-6602	Critical	9.8	55%	-	-
CVE-2014-8687	Critical	9.8	44%	-	-
CVE-2020-13777	High	7.4	18%	-	Fix
CVE-2017-17428	Medium	5.9	15%	-	-

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-05-01.