CVE-2023-22639

Local privilege escalation via crafted commands

Published Jun 13, 2023 · Updated Oct 23, 2024

Out-of-bounds writes in Fortinet FortiOS and FortiProxy affected releases allow local users to escalate privileges via crafted commands. Fortinet identifies crafted commands as the input but has not published the affected component, command parser, or faulty memory operation beyond the out-of-bounds write. Exploitation requires local access and high privileges; successful abuse grants elevated code execution with confidentiality, integrity, and availability impact.

CVSS severity6.7
Medium
EPSS probability0.19%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds writes in Fortinet FortiOS and FortiProxy affected releases allow local users to escalate privileges via crafted commands. Fortinet identifies crafted commands as the input but has not published the affected component, command parser, or faulty memory operation beyond the out-of-bounds write. Exploitation requires local access and high privileges; successful abuse grants elevated code execution with confidentiality, integrity, and availability impact.

The record

CVE
CVE-2023-22639
Published
Jun 13, 2023
Updated
Oct 23, 2024
Vendor
Fortinet
Product
FortiOS
Classifications
CWE-787, T1068
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Jun 13, 2023CVE publishedPublication date reported by the CVE source.
  2. Oct 23, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=6.0.0 <=6.0.17
  2. Affected versionversion=6.2.0 <=6.2.15
  3. Affected versionversion=6.4.0 <=6.4.12
  4. Affected versionversion=7.0.0 <=7.0.10
  5. Affected versionversion=7.2.0 <=7.2.3

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Fortinet · FortiOSversion=6.0.0 <=6.0.17; version=6.2.0 <=6.2.15; version=6.4.0 <=6.4.12; version=7.0.0 <=7.0.10; version=7.2.0 <=7.2.3
Fortinet · FortiProxyversion=1.0.0 <=1.0.7; version=1.1.0 <=1.1.6; version=1.2.0 <=1.2.13; version=2.0.0 <=2.0.12; version=7.0.0 <=7.0.8; version=7.2.0 <=7.2.2

Published CVSS scores

6.7Fortinet, Inc.CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write
T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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