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Vulnerability record · CVE-2007-0956 · published 6 April 2007

CVE-2007-0956: Mit kerberos 5 missing authentication for critical function vulnerability

Mit · Kerberos 5

The telnet daemon (telnetd) in MIT krb5 before 1.6.1 allows remote attackers to bypass authentication and gain system access via a username beginning with a '-' character, a similar issue to CVE-2007-0882.

10.0 CVSS 2.0 High EPSS 30% · top 1.9% CWE-306 · Missing authentication for critical function
10.0CVSS 2.0 base score
30%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
60References
16 Jun 2026Last modified by NVD

Description

The telnet daemon (telnetd) in MIT krb5 before 1.6.1 allows remote attackers to bypass authentication and gain system access via a username beginning with a '-' character, a similar issue to CVE-2007-0882.

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

Affected products

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

References

LinkTags
ftp://patches.sgi.com/support/free/security/advisories/20070401-01-P.asc Broken Link
http://lists.suse.com/archive/suse-security-announce/2007-Apr/0001.html Broken Link
http://secunia.com/advisories/24706 Third Party Advisory
http://secunia.com/advisories/24735 Third Party Advisory
http://secunia.com/advisories/24736 Third Party Advisory
http://secunia.com/advisories/24740 Third Party Advisory
http://secunia.com/advisories/24750 Third Party Advisory
http://secunia.com/advisories/24755 Third Party Advisory
http://secunia.com/advisories/24757 Third Party Advisory
http://secunia.com/advisories/24785 Third Party Advisory
http://secunia.com/advisories/24786 Third Party Advisory
http://secunia.com/advisories/24817 Third Party Advisory
http://security.gentoo.org/glsa/glsa-200704-02.xml Third Party Advisory
http://sunsolve.sun.com/search/document.do?assetkey=1-26-102867-1 Broken Link
http://web.mit.edu/kerberos/www/advisories/MITKRB5-SA-2007-001-telnetd.txt Vendor Advisory
http://www.debian.org/security/2007/dsa-1276 Third Party Advisory
http://www.kb.cert.org/vuls/id/220816 Third Party AdvisoryUS Government Resource
http://www.mandriva.com/security/advisories?name=MDKSA-2007:077 Third Party Advisory
http://www.redhat.com/support/errata/RHSA-2007-0095.html Third Party Advisory
http://www.securityfocus.com/archive/1/464590/100/0/threaded Third Party AdvisoryVDB Entry
http://www.securityfocus.com/archive/1/464666/100/0/threaded Third Party AdvisoryVDB Entry
http://www.securityfocus.com/archive/1/464814/30/7170/threaded Third Party AdvisoryVDB Entry
http://www.securityfocus.com/bid/23281 Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id?1017848 Third Party AdvisoryVDB Entry
http://www.ubuntu.com/usn/usn-449-1 Third Party Advisory
http://www.us-cert.gov/cas/techalerts/TA07-093B.html Third Party AdvisoryUS Government Resource
http://www.vupen.com/english/advisories/2007/1218 Third Party Advisory
http://www.vupen.com/english/advisories/2007/1249 Third Party Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/33414 Third Party AdvisoryVDB Entry
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10046 Broken LinkThird Party Advisory
ftp://patches.sgi.com/support/free/security/advisories/20070401-01-P.asc Broken Link
http://lists.suse.com/archive/suse-security-announce/2007-Apr/0001.html Broken Link
http://secunia.com/advisories/24706 Third Party Advisory
http://secunia.com/advisories/24735 Third Party Advisory
http://secunia.com/advisories/24736 Third Party Advisory
http://secunia.com/advisories/24740 Third Party Advisory
http://secunia.com/advisories/24750 Third Party Advisory
http://secunia.com/advisories/24755 Third Party Advisory
http://secunia.com/advisories/24757 Third Party Advisory
http://secunia.com/advisories/24785 Third Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2007-0956), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.