CVE-2025-24326Network attack vector

Service disruption via undisclosed BADoS TLS traffic

Published Feb 5, 2025 · Updated Feb 5, 2025

Out-of-bounds write in F5 BIG-IP Advanced WAF/ASM allows remote attackers to increase memory use via undisclosed traffic. F5 identifies the affected locus only as the BADoS TLS Signatures feature and has not disclosed how the traffic causes the out-of-bounds write. Exposure requires the feature to be configured, and the resulting memory pressure disrupts BIG-IP service and downstream availability.

CVSS severity8.9
High
EPSS probability0.41%
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 write in F5 BIG-IP Advanced WAF/ASM allows remote attackers to increase memory use via undisclosed traffic. F5 identifies the affected locus only as the BADoS TLS Signatures feature and has not disclosed how the traffic causes the out-of-bounds write. Exposure requires the feature to be configured, and the resulting memory pressure disrupts BIG-IP service and downstream availability.

The record

CVE
CVE-2025-24326
Published
Feb 5, 2025
Updated
Feb 5, 2025
Vendor
F5 Networks
Product
BIG-IP
Classifications
CWE-787, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 5, 2025CVE publishedPublication date reported by the CVE source.
  2. Feb 5, 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 <* changes=[{"at":"Hotfix-BIGIP-15.1.10.6.0.11.6-ENG.iso","status":"unaffected"}]
  2. Affected versionversion=16.1.0 <16.1.5
  3. Affected versionversion=17.1.0 <17.1.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

F5 Networks · BIG-IPversion=15.1.0 <* changes=[{"at":"Hotfix-BIGIP-15.1.10.6.0.11.6-ENG.iso","status":"unaffected"}]; version=16.1.0 <16.1.5; version=17.1.0 <17.1.2

Published CVSS scores

8.9F5 NetworksCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H
7.5F5 NetworksCVSS: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-787Out-of-bounds Write
T1499.004Application 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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