CVE-2026-115778 Twisted - Denial of Service

Twisted < 26.10.0rc1 contains a denial of service caused by unbounded growth of the Telnet subnegotiation buffer in twisted.conch.telnet.Telnet.dataReceived, letting unauthenticated peers exhaust memory by omitting terminator, exploit requires unauthenticated network access.

CVSS base score 7.5 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.74% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Denial of Service
Impact
Denial Of Service
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
23 October 2026
Updated
25 October 2026
Weakness
CWE-400

Vendor fix

Upgrade to version 26.10.0rc1 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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