CVE-2024-23805Network attack vector

Unauthenticated service interruption via TMM buffer miscalculation

Published Feb 14, 2024 · Updated May 12, 2025

Incorrect buffer-size calculation in F5 BIG-IP allows remote attackers to terminate TMM and interrupt application traffic via requests. F5 has not disclosed the request format or affected function, but the CNA maps the flaw to an incorrect buffer-size calculation in the TMM request-processing path. Reachability requires specific AVR, Advanced WAF, or ASM profiles plus either of two nondefault database variables; termination interrupts traffic handled by the affected TMM instance.

CVSS severity7.5
High
EPSS probability0.52%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect buffer-size calculation in F5 BIG-IP allows remote attackers to terminate TMM and interrupt application traffic via requests. F5 has not disclosed the request format or affected function, but the CNA maps the flaw to an incorrect buffer-size calculation in the TMM request-processing path. Reachability requires specific AVR, Advanced WAF, or ASM profiles plus either of two nondefault database variables; termination interrupts traffic handled by the affected TMM instance.

The record

CVE
CVE-2024-23805
Published
Feb 14, 2024
Updated
May 12, 2025
Vendor
F5 Networks
Product
BIG-IP
Classifications
CWE-131, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 14, 2024CVE publishedPublication date reported by the CVE source.
  2. May 12, 2025Record 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=15.1.0 <15.1.10
  2. Affected versionversion=16.1.0 <16.1.4
  3. Affected versionversion=17.1.0 <17.1.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

F5 Networks · BIG-IPversion=15.1.0 <15.1.10; version=16.1.0 <16.1.4; version=17.1.0 <17.1.1

Published CVSS scores

7.5F5 NetworksCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.5NIST NVDCVSS: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-131Incorrect Calculation of Buffer Size
T1499.004Endpoint Denial of Service: Application or System Exploitation

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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