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Vulnerability record · CVE-2005-0469 · published 2 May 2005

CVE-2005-0469: Ncsa telnet vulnerability

Ncsa · Telnet

Buffer overflow in the slc_add_reply function in various BSD-based Telnet clients, when handling LINEMODE suboptions, allows remote attackers to execute arbitrary code via a reply with a large number of Set Local Character (SLC) commands.

7.5 CVSS 2.0 High EPSS 8.9% · top 5.0%
7.5CVSS 2.0 base score
8.9%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
44References
16 Jun 2026Last modified by NVD

Description

Buffer overflow in the slc_add_reply function in various BSD-based Telnet clients, when handling LINEMODE suboptions, allows remote attackers to execute arbitrary code via a reply with a large number of Set Local Character (SLC) commands.

AV:N/AC:L/Au:N/C:P/I:P/A:P

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
ftp://ftp.freebsd.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-05:01.telnet.asc Vendor Advisory
ftp://patches.sgi.com/support/free/security/advisories/20050405-01-P Patch
http://secunia.com/advisories/14745
http://secunia.com/advisories/17899
http://sunsolve.sun.com/search/document.do?assetkey=1-26-101665-1
http://sunsolve.sun.com/search/document.do?assetkey=1-26-101671-1
http://sunsolve.sun.com/search/document.do?assetkey=1-26-57755-1 PatchVendor Advisory
http://sunsolve.sun.com/search/document.do?assetkey=1-26-57761-1
http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2005-001-telnet.txt PatchVendor Advisory
http://www.debian.de/security/2005/dsa-731
http://www.debian.org/security/2005/dsa-697 PatchVendor Advisory
http://www.debian.org/security/2005/dsa-699 PatchVendor Advisory
http://www.debian.org/security/2005/dsa-703 PatchVendor Advisory
http://www.gentoo.org/security/en/glsa/glsa-200503-36.xml PatchVendor Advisory
http://www.idefense.com/application/poi/display?id=220&type=vulnerabilities PatchVendor Advisory
http://www.kb.cert.org/vuls/id/291924 Third Party AdvisoryUS Government Resource
http://www.mandriva.com/security/advisories?name=MDKSA-2005:061
http://www.redhat.com/support/errata/RHSA-2005-327.html PatchVendor Advisory
http://www.redhat.com/support/errata/RHSA-2005-330.html PatchVendor Advisory
http://www.securityfocus.com/bid/12918
http://www.ubuntulinux.org/usn/usn-224-1
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9708
ftp://ftp.freebsd.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-05:01.telnet.asc Vendor Advisory
ftp://patches.sgi.com/support/free/security/advisories/20050405-01-P Patch
http://secunia.com/advisories/14745
http://secunia.com/advisories/17899
http://sunsolve.sun.com/search/document.do?assetkey=1-26-101665-1
http://sunsolve.sun.com/search/document.do?assetkey=1-26-101671-1
http://sunsolve.sun.com/search/document.do?assetkey=1-26-57755-1 PatchVendor Advisory
http://sunsolve.sun.com/search/document.do?assetkey=1-26-57761-1
http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2005-001-telnet.txt PatchVendor Advisory
http://www.debian.de/security/2005/dsa-731
http://www.debian.org/security/2005/dsa-697 PatchVendor Advisory
http://www.debian.org/security/2005/dsa-699 PatchVendor Advisory
http://www.debian.org/security/2005/dsa-703 PatchVendor Advisory
http://www.gentoo.org/security/en/glsa/glsa-200503-36.xml PatchVendor Advisory
http://www.idefense.com/application/poi/display?id=220&type=vulnerabilities PatchVendor Advisory
http://www.kb.cert.org/vuls/id/291924 Third Party AdvisoryUS Government Resource
http://www.mandriva.com/security/advisories?name=MDKSA-2005:061
http://www.redhat.com/support/errata/RHSA-2005-327.html PatchVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

7.5CVE-2005-0468Ncsa telnet vulnerabilityHeap-based buffer overflow in the env_opt_add function in telnet.c for various BSD-based Telnet clients allows remote attackers to execute arbitrary …EPSS 27%7.5CVE-1999-1090Ncsa telnet vulnerabilityThe default configuration of NCSA Telnet package for Macintosh and PC enables FTP, even though it does not include an "ftp=yes" line, which allows re…EPSS 1.7%

Source: NIST National Vulnerability Database (record CVE-2005-0469), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.