Remote service interruption via TMM stack overflow
Published Aug 13, 2025 · Updated Aug 13, 2025
Stack-based buffer overflow in F5 BIG-IP APM allows remote attackers to terminate TMM through traffic sent to a Network Access virtual server. The flaw is in the Traffic Management Microkernel, but F5 has not disclosed which traffic field overruns the stack buffer or how it is processed. Exposure requires Network Access on the targeted APM virtual server; exploitation interrupts traffic processing without reported data disclosure or modification.
Summary
What happened
Stack-based buffer overflow in F5 BIG-IP APM allows remote attackers to terminate TMM through traffic sent to a Network Access virtual server. The flaw is in the Traffic Management Microkernel, but F5 has not disclosed which traffic field overruns the stack buffer or how it is processed. Exposure requires Network Access on the targeted APM virtual server; exploitation interrupts traffic processing without reported data disclosure or modification.
The record
- CVE
- CVE-2025-46405
- Published
- Aug 13, 2025
- Updated
- Aug 13, 2025
- Vendor
- F5 Networks
- Product
- BIG-IP
- Classifications
- CWE-121, T1499
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Aug 13, 2025CVE publishedPublication date reported by the CVE source.
- Aug 13, 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.
- Affected versionversion=15.1.0 <*
- Affected versionversion=16.1.0 <16.1.6
- Affected versionversion=17.1.0 <17.1.2.2
What conditions does exploitation require?
What is affected?
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.
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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