CVE-2026-70455: falha de alta gravidade em RsyncProject rsync
rsync 3.4.2 < 3.5.0 DoS via --zt Zstandard Compression Thread Exhaustion
Publicada em · Atualizada em
Aviso por e-mail quando ela entrar no KEV, ganhar PoC pública ou subir de nota.
21Vexday Risk Score
Sem sinal de exploração. Nenhum artefato público de exploração conhecido até agora.
ssvc Trackcvss 8.7epss 0.6%
rsync 3.4.2 before 3.5.0 contains a denial of service vulnerability that allows a remote sender to exhaust system resources by specifying the --zt short alias for --compress-threads, which bypasses the refuse options directive's string matching on long option names. Attackers can specify --zt=N with a large value to spawn an unbounded number of Zstandard worker threads on the receiver, exhausting available thread and memory resources.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Produtos afetados
RsyncProject · rsyncCVEs relacionadas — RsyncProject rsync
No mesmo produto, das mais perigosas para as menos.
CVE-2026-43618MEDIUMRsync < 3.4.3 Integer Overflow Information DisclosureEPSS 0.8%CVE-2026-70459MEDIUMrsync 3.0.0 < 3.5.0 Daemon Crash via Malformed File List EntryEPSS 0.7%CVE-2026-70464HIGHrsync 2.0.0 < 3.5.0 Connection Slot Exhaustion DoS via Handshake StallEPSS 0.6%CVE-2026-53790CRITICALrsync < 3.5.0 Command Injection via Multiple Code PathsEPSS 0.6%CVE-2026-119741HIGHrsync < 3.5.2 Denial of Service via hash_search() Checksum CollisionsEPSS 0.6%CVE-2026-70453HIGHrsync < 3.5.0 Algorithmic Complexity DoS via hash_search()EPSS 0.6%