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CVE Watch

CVE-2023-27997

Fortinet FortiOS and FortiProxy SSL-VPN Heap-Based Buffer Overflow Vulnerability

CVSS

No CVSS

EPSS

85.7%

p100

KEV

YES

Jun 13, 2023

Exploit Today

80

0-100

Published: · Last modified:

EPSS · 30d
85.7%EPSS · 30 days85.7%
2026-06-302026-07-16
KEV catalog record

Product

Fortinet / FortiOS and FortiProxy SSL-VPN

Vulnerability

Fortinet FortiOS and FortiProxy SSL-VPN Heap-Based Buffer Overflow Vulnerability

Added to KEV

Jun 13, 2023

Remediate by

Jul 4, 2023

Known ransomware use

Yes

Summary description

Fortinet FortiOS and FortiProxy SSL-VPN contain a heap-based buffer overflow vulnerability which can allow an unauthenticated, remote attacker to execute code or commands via specifically crafted requests.

Required action

Apply updates per vendor instructions.

Notes

https://www.fortiguard.com/psirt/FG-IR-23-097; https://nvd.nist.gov/vuln/detail/CVE-2023-27997

Related CVEs

No related CVEs by CWE or product.

CVE-2023-27997 — Fortinet FortiOS and FortiProxy SSL-VPN Heap-Based Buffer Overflow Vulnerability · Pulse | Pulse