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CVE-2022-39948

HIGH
7.4
CVSS Score
Published: February 16, 2023 at 06:06 PM UTC
Updated: June 17, 2026 at 04:58 AM UTC
2 products affected across 1 vendorFortiOSFortiProxy

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Severity
HIGH7.4
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

Description

An improper certificate validation vulnerability [CWE-295] in FortiOS 7.2.0 through 7.2.3, 7.0.0 through 7.0.7, 6.4 all versions, 6.2 all versions, 6.0 all versions and FortiProxy 7.0.0 through 7.0.6, 2.0 all versions, 1.2 all versions may allow a remote and unauthenticated attacker to perform a Man-in-the-Middle attack on the communication channel between the FortiOS/FortiProxy device and remote servers hosting threat feeds (when the latter are configured as Fabric connectors in FortiOS/FortiProxy)

Affected

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

FortiOS· Fortinet
95%
6.0.0 ≤ v ≤ 6.0.166.0.0 ≤ v < 7.0.86.2.0 ≤ v ≤ 6.2.126.4.0 ≤ v ≤ 6.4.117.0.0 ≤ v ≤ 7.0.77.2.0 ≤ v ≤ 7.2.37.2.0 ≤ v < 7.2.46.0.06.2.06.4.07.0.07.2.0
Affected range stops below 7.0.8, so it looks safe — our inference, not a vendor statement
Affected range stops below 7.2.4, so it looks safe — our inference, not a vendor statement
FortiProxy· Fortinet
95%
1.2.0 ≤ v ≤ 1.2.131.2.0 ≤ v ≤ 2.0.92.0.0 ≤ v ≤ 2.0.117.0.0 ≤ v ≤ 7.0.67.0.0 ≤ v < 7.0.71.2.02.0.07.0.0
Affected range stops below 7.0.7, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

Vendor Advisory
Source: [email protected]
https://fortiguard.com/psirt/FG-IR-22-257

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.4HIGH[email protected]
Attack Vector
NETWORK
Complexity
HIGH
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-295

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