Re: Remote Pre-Auth Buffer Overflow in GNU Inetutils telnetd (LINEMODE SLC)

Adiel Sol <[email protected]> Thu, 12 Mar 2026 14:05:37 +0000
Newsgroups gmane.comp.gnu.inetutils.bugs
Message-ID <VI0PR10MB98342B01DB167BD4E208FD1CD044A@VI0PR10MB9834.EURPRD10.PROD.OUTLOOK.COM>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