CVE Watch23 oct 2026

CVE-2026-115778

Twisted is an event-based framework for internet applications, supporting Python 3.6+. Prior to 26.10.0rc1, twisted.conch.telnet.Telnet.data

CVSS

7.5

Alto

EPSS

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KEV

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Exploit Today

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0-100

Publicado: 23 oct 2026 · Última mod.: 23 oct 2026 · CWE-400 · CWE-770

EPSS · 30d

Sin historial EPSS suficiente todavía.

Descripción técnica

Twisted is an event-based framework for internet applications, supporting Python 3.6+. Prior to 26.10.0rc1, twisted.conch.telnet.Telnet.dataReceived appends every byte received after IAC SB to a persistent subnegotiation buffer until IAC SE is received, without applying a maximum length. Telnet option negotiation occurs before authentication, so an unauthenticated peer can omit the terminator and continuously grow the buffer. The resulting memory exhaustion can terminate the process and every service it hosts. This issue is fixed in version 26.10.0rc1.

Referencias oficiales

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