PNGboomer-CVE-2026-77622

PNGboomer — CVE-2026-77622 Denial-of-service exploit for Sliver C2's HTTPS listener. Brute-forces the per-session PNG encoding nonce and delivers a decompression bomb that exhausts server memory. Published as GHSA-663m-7x7m-g4fw. Summary Sliver's HTTPS C2 channel wraps messages inside PNG images...