Is CVE-2007-0956 being actively exploited?

CVE-2007-0956 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2007-0956?

CVE-2007-0956 has a CVSS 2.0 base score of 10.0 (HIGH).

CVE-2007-0956

HIGH · CVSS 10.0EPSS 30.2%EU EUVD

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.

Key facts

CVSS score: 10.0 (v2.0)
Severity: HIGH
CVSS vector: AV:N/AC:L/Au:N/C:C/I:C/A:C
Weakness (CWE): CWE-306
EPSS score: 30.2% (98th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2007-0950)
Published: April 6, 2007
NVD last modified: June 16, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2007-0950 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.

View on the EU Vulnerability Database

Affected products

canonical / ubuntu linux
canonical / ubuntu linux
canonical / ubuntu linux
debian / debian linux
debian / debian linux
mit / kerberos 5

References

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 Advisory, US 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 Advisory, VDB Entry)
http://www.securityfocus.com/archive/1/464666/100/0/threaded(Third Party Advisory, VDB Entry)
http://www.securityfocus.com/archive/1/464814/30/7170/threaded(Third Party Advisory, VDB Entry)
http://www.securityfocus.com/bid/23281(Third Party Advisory, VDB Entry)
http://www.securitytracker.com/id?1017848(Third Party Advisory, VDB Entry)
http://www.ubuntu.com/usn/usn-449-1(Third Party Advisory)
http://www.us-cert.gov/cas/techalerts/TA07-093B.html(Third Party Advisory, US 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 Advisory, VDB Entry)
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10046(Broken Link, Third Party Advisory)

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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