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

CVE-2023-27997

CRITICAL · CVSS 9.8 ⚠ KEV — EXPLOITED

EPSS exploitation probability: 100%

⚠ Listed in the CISA Known Exploited Vulnerabilities catalog — actively exploited.

Published 2023-06-13 · Last modified 2026-07-31T04:16:43.707

Summary

A heap-based buffer overflow vulnerability [CWE-122] in FortiOS version 7.2.4 and below, version 7.0.11 and below, version 6.4.12 and below, version 6.0.16 and below and FortiProxy version 7.2.3 and below, version 7.0.9 and below, version 2.0.12 and below, version 1.2 all versions, version 1.1 all versions SSL-VPN may allow a remote attacker to execute arbitrary code or commands via specifically crafted requests.

Affected products

Fortinet — FortiOS and FortiProxy SSL-VPN

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.