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Left 4 Dead 2 got a tiny stability pass today
The June 26 update focused on crash fixes and exploit patches reported through HackerOne.

Left 4 Dead 2 received a small update on June 26, 2026, with Valve focusing on crash fixes and exploits that were reported through HackerOne.
Patch Notes
The changelog is short, but it points directly at stability work and security-related cleanup.
- Fixed several crashes and exploits reported via HackerOne.
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Source: Steam





