CVE-2025-24497Network attack vector

Service interruption via out-of-bounds request read

Published Feb 5, 2025 · Updated Feb 12, 2025

Out-of-bounds read in F5 BIG-IP PEM 17.1.0 before 17.1.2 allows remote attackers to terminate TMM via crafted requests. With URL categorization enabled on a virtual server, TMM reads beyond a buffer boundary while processing request data; F5 has not disclosed the request format or narrower code locus. Unauthenticated network access to an affected virtual server is sufficient, and successful exploitation interrupts traffic processing by terminating TMM.

CVSS severity8.7
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 read in F5 BIG-IP PEM 17.1.0 before 17.1.2 allows remote attackers to terminate TMM via crafted requests. With URL categorization enabled on a virtual server, TMM reads beyond a buffer boundary while processing request data; F5 has not disclosed the request format or narrower code locus. Unauthenticated network access to an affected virtual server is sufficient, and successful exploitation interrupts traffic processing by terminating TMM.

The record

CVE
CVE-2025-24497
Published
Feb 5, 2025
Updated
Feb 12, 2025
Vendor
F5 Networks
Product
BIG-IP
Classifications
CWE-125, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 5, 2025CVE publishedPublication date reported by the CVE source.
  2. Feb 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=17.1.0 <17.1.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

F5 Networks · BIG-IPversion=17.1.0 <17.1.2

Published CVSS scores

7.5F5 NetworksCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
8.7F5 NetworksCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-125Out-of-bounds Read
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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