CVE-2023-45586

MEDIUM

CVSS Score

Published: May 14, 2024 at 04:19 PM UTC

Updated: June 17, 2026 at 06:28 AM UTC

2 products affected across 1 vendorFortiOSFortiProxy

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Severity

MEDIUM5

Exploit prediction

EPSS 0.3%

SSVC

No known exploit

Description

An insufficient verification of data authenticity vulnerability [CWE-345] in Fortinet FortiOS SSL-VPN tunnel mode version 7.4.0 through 7.4.1, version 7.2.0 through 7.2.7 and before 7.0.12 & FortiProxy SSL-VPN tunnel mode version 7.4.0 through 7.4.1, version 7.2.0 through 7.2.7 and before 7.0.13 allows an authenticated VPN user to send (but not receive) packets spoofing the IP of another user via crafted network packets.

Affected

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

FortiOS · Fortinet

95%

6.2.0 ≤ v ≤ 6.2.166.4.0 ≤ v ≤ 6.4.157.0.0 ≤ v ≤ 7.0.127.0.0 ≤ v < 7.0.127.0.0 ≤ v < 7.0.137.2.0 ≤ v ≤ 7.2.77.2.0 ≤ v < 7.2.87.4.0 ≤ v ≤ 7.4.16.2.0 6.4.0 7.0.0 7.2.0 7.4.0 7.4.1

Affected range stops below 7.0.12, so it looks safe — our inference, not a vendor statement

Affected range stops below 7.0.13, so it looks safe — our inference, not a vendor statement

Affected range stops below 7.2.8, so it looks safe — our inference, not a vendor statement

FortiProxy · Fortinet

95%

2.0.0 ≤ v ≤ 2.0.122.0.0 ≤ v ≤ 2.0.147.0.0 ≤ v ≤ 7.0.137.0.0 ≤ v < 7.0.147.2.0 ≤ v ≤ 7.2.77.2.0 ≤ v < 7.2.87.4.0 ≤ v ≤ 7.4.12.0.0 7.0.0 7.2.0 7.4.0 7.4.1

Affected range stops below 7.0.14, so it looks safe — our inference, not a vendor statement

Affected range stops below 7.2.8, 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

https://fortiguard.com/psirt/FG-IR-23-225

References (1)

Vendor Advisory

Source: [email protected]

https://fortiguard.com/psirt/FG-IR-23-225

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

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

CVSS

5MEDIUM[email protected]

Attack Vector: NETWORK
Complexity: LOW
Privileges: LOW
User Interaction: NONE
Scope: CHANGED
Confidentiality: NONE
Integrity: LOW
Availability: NONE

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-345

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