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Critical FortiOS and FortiProxy Vulnerability Likely Exploited – Patch Now!

June 13, 2023

Fortinet on Monday disclosed that a newly patched critical flaw impacting FortiOS and FortiProxy may have been “exploited in a limited number of cases” in attacks targeting government, manufacturing, and critical infrastructure sectors.

The vulnerability, tracked as CVE-2023-27997 (CVSS score: 9.2), concerns a heap-based buffer overflow vulnerability in FortiOS and FortiProxy SSL-VPN that could allow a remote attacker to execute arbitrary code or commands via specifically crafted requests.

LEXFO security researchers Charles Fol and Dany Bach have been credited with discovering and reporting the flaw. It was addressed by Fortinet on June 9, 2023 in the following versions –

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