CVE-2023-29180Network attack vector

Unauthenticated service crash via crafted HTTP requests

Published Feb 22, 2024 · Updated Aug 14, 2024

Null pointer dereference in FortiOS and FortiProxy allows remote attackers to crash SSL VPN services with crafted HTTP requests. The SSLVPNd request handler dereferences a null pointer while processing the crafted request; Fortinet has not disclosed the triggering field or code path. No authentication or user interaction is required, and the bounded consequence is service interruption rather than data access or code execution.

CVSS severity7.5
High
EPSS probability2.61%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Null pointer dereference in FortiOS and FortiProxy allows remote attackers to crash SSL VPN services with crafted HTTP requests. The SSLVPNd request handler dereferences a null pointer while processing the crafted request; Fortinet has not disclosed the triggering field or code path. No authentication or user interaction is required, and the bounded consequence is service interruption rather than data access or code execution.

The record

CVE
CVE-2023-29180
Published
Feb 22, 2024
Updated
Aug 14, 2024
Vendor
Fortinet
Product
FortiOS
Classifications
CWE-476, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 22, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 14, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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

  1. Affected versionversion=6.0.0 <=6.0.16
  2. Affected versionversion=6.2.0 <=6.2.14
  3. Affected versionversion=6.2.0 <=6.2..14
  4. Affected versionversion=6.4.0 <=6.4.12
  5. Affected versionversion=7.0.0 <=7.0.11
  6. Affected versionversion=7.2.0 <=7.2.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Fortinet · FortiOSversion=6.0.0 <=6.0.16; version=6.2.0 <=6.2.14; version=6.2.0 <=6.2..14; version=6.4.0 <=6.4.12; version=7.0.0 <=7.0.11; version=7.2.0 <=7.2.4
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 <=7.0.10; version=7.2.0 <=7.2.3

Published CVSS scores

7.5FortinetCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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