How severe is CVE-2023-45586?

CVE-2023-45586 has a CVSS 3.x base score of 5.0, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2023-45586 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-45586?

CVE-2023-45586 primarily affects Fortinet Fortiproxy. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-45586?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2023-45586 have an EU (EUVD) identifier?

Yes. CVE-2023-45586 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-49878.

When was CVE-2023-45586 published?

CVE-2023-45586 was published on 2024-05-14 and last updated on 2026-06-17.

CVE-2023-45586

CVE-2023-45586 is a medium-severity vulnerability in Fortinet Fortiproxy with a CVSS 3.x base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-345.

Key facts

Severity: Medium (CVSS 3.x base score 5.0)
EPSS exploit prediction: 0% (21st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2023-49878
Weakness: CWE-345
Affected product: Fortinet Fortiproxy
Published: 2024-05-14
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2023-45586?: 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.
How severe is CVE-2023-45586?: CVE-2023-45586 has a CVSS 3.x base score of 5.0, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2023-45586 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-45586?: CVE-2023-45586 primarily affects Fortinet Fortiproxy. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-45586?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2023-45586 have an EU (EUVD) identifier?: Yes. CVE-2023-45586 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-49878.
When was CVE-2023-45586 published?: CVE-2023-45586 was published on 2024-05-14 and last updated on 2026-06-17.

References

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

Affected products (6)

cpe:2.3:a:fortinet:fortiproxy:*:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.4.0:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiproxy:7.4.1:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:*:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:7.4.0:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:7.4.1:*:*:*:*:*:*:*

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