CVE-2026-48045mediumCWE-770

CVE-2026-48045: fallo de gravedad media en python-zeroconf

Zeroconf: Unbounded TC-deferred queue allows LAN-local memory exhaustion via spoofed-source flood

Publicada el

Seguir esta CVE+ Monitorear python-zeroconf+ Monitorear python-zeroconf

Aviso por correo cuando entre en el KEV, tenga PoC pública o suba de nota.

13Vexday Risk Score

Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.

ssvc Trackcvss 6.5epss 0.4%
Zeroconf is a pure Python implementation of multicast DNS service discovery. Prior to 0.149.12, AsyncListener.handle_query_or_defer retained every truncated TC-bit incoming query, each up to _MAX_MSG_ABSOLUTE = 8966 bytes, in self._deferred[addr] and armed a per-address timer in self._timers[addr] without capping the per-address list or distinct addr keys, allowing unauthenticated hosts on the local link over UDP/5353 (224.0.0.251 / ff02::fb) to spoof sources, grow _deferred and _timers, and cause memory exhaustion and quadratic CPU burn. This issue is fixed in version 0.149.12.
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Productos afectados
python-zeroconf · python-zeroconf
CVEs relacionadas — python-zeroconf

En el mismo producto, de las más peligrosas a las menos.

CVE-2026-48487MEDIUMZeroconf: Unvalidated rdlength in record payload readers allows LAN-local cache corruption via crafted mDNS packetEPSS 0.5%CVE-2026-47184MEDIUMZeroconf: Unbounded DNS record cache allows LAN-local memory exhaustion via multicast floodEPSS 0.4%CVE-2026-47183MEDIUMZeroconf: Unbounded exception-dedup state retains packet buffers via traceback frame locals, enabling LAN-local memory exhaustionEPSS 0.4%CVE-2026-47180MEDIUMZeroconf: Unbounded recursion in DNS compression-pointer decoder allows LAN-local denial of serviceEPSS 0.4%