CVE-2021-26093

Managed access point crash via crafted CLI command

Published Dec 19, 2024 · Updated Dec 20, 2024

Access of an uninitialized pointer in Fortinet FortiWLC allows local users to crash a managed access point with a crafted CLI command. The CLI command handler accesses a pointer before initialization, but Fortinet has not identified the affected command or argument. Exploitation requires an authenticated local controller session; the bounded consequence is an access-point crash, with no disclosed controller crash or code execution.

CVSS severity7.3
High
EPSS probability0.16%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Access of an uninitialized pointer in Fortinet FortiWLC allows local users to crash a managed access point with a crafted CLI command. The CLI command handler accesses a pointer before initialization, but Fortinet has not identified the affected command or argument. Exploitation requires an authenticated local controller session; the bounded consequence is an access-point crash, with no disclosed controller crash or code execution.

The record

CVE
CVE-2021-26093
Published
Dec 19, 2024
Updated
Dec 20, 2024
Vendor
Fortinet
Product
FortiWLC
Classifications
CWE-824, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 19, 2024CVE publishedPublication date reported by the CVE source.
  2. Dec 20, 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=8.0.6
  2. Affected versionversion=8.1.2 <=8.1.3
  3. Affected versionversion=8.2.4 <=8.2.7
  4. Affected versionversion=8.3.0 <=8.3.3
  5. Affected versionversion=8.4.0 <=8.4.2
  6. Affected versionversion=8.4.4 <=8.4.8
  7. Affected versionversion=8.5.0 <=8.5.3
  8. Affected versionversion=8.6.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Fortinet · FortiWLCversion=8.0.6; version=8.1.2 <=8.1.3; version=8.2.4 <=8.2.7; version=8.3.0 <=8.3.3; version=8.4.0 <=8.4.2; version=8.4.4 <=8.4.8; version=8.5.0 <=8.5.3; version=8.6.0

Published CVSS scores

7.3Fortinet, Inc.CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:H
6.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/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)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-824Access of Uninitialized Pointer
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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