CVE-2023-22640
HighCVSS 7.5Exploitation Probability (EPSS)
Elevated risk59th percentile - higher than 59% of all known CVEs
Summary
An out-of-bounds write vulnerability in Fortinet FortiOS and FortiProxy allows an authenticated attacker to execute unauthorized code or commands via specifically crafted requests.
Risk Assessment
An authenticated attacker could gain control over the Fortinet device, potentially compromising the confidentiality, integrity, and availability of network infrastructure.
Recommendation
Upgrade FortiOS and FortiProxy to the latest versions that fix this vulnerability, as recommended by Fortinet.
Other vulnerabilities in FortiOS / FortiProxy
See all- CVE-2024-21762CriticalActively exploited
An out-of-bounds write vulnerability in Fortinet FortiOS and FortiProxy across multiple versions. It allows an attacker to execute unauthorized code or commands via specifically crafted requests.
- CVE-2026-84393High
A improper validation of certificate with host mismatch vulnerability in Fortinet FortiOS 7.6.1 through 7.6.6, FortiProxy 7.6.2 through 7.6.6 may allow attacker to information disclosure via <insert attack vector here>
- CVE-2025-54822Medium
An improper authorization vulnerability (CWE-285) in Fortinet FortiOS and FortiProxy allows an authenticated attacker to access static files of other VDOMs via crafted HTTP or HTTPS requests. Affects multiple versions of FortiOS (7.4.0-7.4.1, 7.2.0-7.2.8, 7.0.0-7.0.11) and FortiProxy (7.4.0-7.4.8, 7.2, 7.0, 2.0).
- CVE-2022-42476High
A relative path traversal vulnerability (CWE-23) in Fortinet FortiOS (7.2.0–7.2.3, 7.0.0–7.0.8, 6.4.0–6.4.11, 6.2.0–6.2.12) and FortiProxy (7.2.0–7.2.1, 7.0.0–7.0.7, 2.0.0–2.0.11, 1.2, 01.02, 1.1, 01.01) allows privileged VDOM administrators to escalate to super admin via crafted CLI requests.
- CVE-2022-42472Medium
Fortinet FortiOS and FortiProxy contain an improper neutralization of CRLF sequences in HTTP headers (HTTP response splitting). An authenticated remote attacker can perform an HTTP request splitting attack, gaining control of the remaining headers and body of the response.
Original NVD description (English source)
A out-of-bounds write vulnerability in Fortinet FortiOS 7.2.0 through 7.2.3, FortiOS 7.0.0 through 7.0.10, FortiOS 6.4.0 through 6.4.11, FortiOS 6.2.0 through 6.2.13, FortiOS 6.0.0 through 6.0.16, FortiProxy 7.2.0 through 7.2.1, FortiProxy 7.0.0 through 7.0.7, FortiProxy 2.0 all versions, FortiProxy 01.02 all versions, FortiProxy 1.2 all versions, FortiProxy 01.01 all versions, FortiProxy 1.1 all versions, FortiProxy 01.00 all versions allows an authenticated attacker to execute unauthorized code or commands via specifically crafted requests.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS