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🛡️ CVE-2024-21849 — big-ip-advanced-web-application-firewall

🟠 CVSS 7.5 — High ✅ No Known Exploit CWE-466 NVD
7.5
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

When an Advanced WAF/ASM security policy and a Websockets profile are configured on a virtual server, undisclosed traffic can cause the Traffic Management Microkernel (TMM) process to terminate.  Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity none, availability high.

CVSS metrics in full

The score comes from this vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

  • Attack vector: Network — reachable from anywhere that can route to the service.
  • Attack complexity: Low — the attack works reliably, with no preparation.
  • Privileges required: None — an unauthenticated stranger can try it.
  • User interaction: None — nobody has to be tricked into anything.
  • Scope: Unchanged — the damage stays inside the vulnerable component.
  • Confidentiality impact: None.
  • Integrity impact: None.
  • Availability impact: High — total loss, or loss the attacker controls.

Weakness class

CVE-2024-21849 is classified as CWE-466: Return of Pointer Value Outside of Expected Range. A function can return a pointer to memory that is outside of the buffer that the pointer is expected to reference.

Affected software

CVE-2024-21849 is recorded against 2 packages.

  • big-ip-advanced-web-application-firewall (from 16.1.0 up to 16.1.4)
  • big-ip-application-security-manager (from 16.1.0 up to 16.1.4)

Timeline and source

Published on 14 February 2024 and last revised on 17 June 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

my.f5.com
my.f5.com

Other advisories for this package

big-ip-advanced-web-application-firewall has other advisories on record. If you are patching this one, these are worth checking on the same host:

Same weakness in other software

These advisories are the same class of weakness (CWE-466: Return of Pointer Value Outside of Expected Range) in other software:

Details

Severity HIGH
CVSS Score 7.5
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE CWE-466
Public Exploit ✅ No
Source NVD
Published 2024-02-14
Updated 2026-08-20
Modified 2026-06-17
Fix URL N/A

Affected Packages

Software From version Fixed in
big-ip-advanced-web-application-firewall 16.1.0 16.1.4
big-ip-application-security-manager 16.1.0 16.1.4

Similar Threats

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ⓘ Data Notice: The information presented above has been compiled from publicly available internet sources. Boteraser aggregates this data solely for informational purposes and does not independently classify, evaluate, or endorse any findings about the vulnerabilities listed. The accuracy and completeness of this information is the sole responsibility of the original publishers. Boteraser and its operators accept no liability for any decisions made based on this data.

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