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Nation-state hackers steal F5 BIG-IP source code
F5 disclosed that a nation-state actor had long-term access to its development systems and stole BIG-IP source code and details of unpatched flaws; CISA ordered urgent patching.
- Organisation
- F5
- Disclosed
- 15 October 2025
- Affected
- Not stated
- Data
- Source code, vulnerability data, some customer configs
- Attacker
- Nation-state (China-linked, reported)
- Severity
- critical
- Region
- Global
- Source
- BleepingComputer ↗
Cite this
Nuffield Consulting, “Nation-state hackers steal F5 BIG-IP source code”, The Daily Tech Wire outage & breach log, 15 Oct 2025. https://techwire.nuffieldconsulting.com/incidents/2025-10-15-f5-breach/ (retrieved 15 Nov 2026).
This entry summarises public reporting. Please also cite the original source: BleepingComputer, https://bleepingcomputer.com/news/security/hackers-breach-f5-to-steal-undisclosed-big-ip-flaws-source-code.
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