CVE-2007-0956

NONECVSS 0.0Elevated

0.0

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.

CVSS v3: —
EG Score: 0.0(none)
EPSS: 96.5%
KEV: Not listed

Published

April 6, 2007

Last Modified

April 23, 2026

References (60)

cve@mitreftp://patches.sgi.com/support/free/security/advisories/20070401-01-P.asc
cve@mitrehttp://lists.suse.com/archive/suse-security-announce/2007-Apr/0001.html
cve@mitrehttp://secunia.com/advisories/24706
cve@mitrehttp://secunia.com/advisories/24735
cve@mitrehttp://secunia.com/advisories/24736
cve@mitrehttp://secunia.com/advisories/24740
cve@mitrehttp://secunia.com/advisories/24750
cve@mitrehttp://secunia.com/advisories/24755
cve@mitrehttp://secunia.com/advisories/24757
cve@mitrehttp://secunia.com/advisories/24785
cve@mitrehttp://secunia.com/advisories/24786
cve@mitrehttp://secunia.com/advisories/24817
cve@mitrehttp://security.gentoo.org/glsa/glsa-200704-02.xml
cve@mitrehttp://sunsolve.sun.com/search/document.do?assetkey=1-26-102867-1
cve@mitrehttp://web.mit.edu/kerberos/www/advisories/MITKRB5-SA-2007-001-telnetd.txt

Patch Availability(2)

Vendor / Ecosystem	Fixed in / Patch	Released	Source
ubuntu	libkadm55 (1.4.3-9ubuntu1.2) @ edgy	2026-05-31	ubuntu
redhat	krb5-0:1.5-23	2007-04-03	redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-306Missing Authentication for Critical Function

All Vendor Advisories

(2)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 4× in last 7d / 42× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

2026-06-14 23:13 UTCEPSS rescore
2026-06-13 22:57 UTCEPSS rescore
2026-06-13 22:57 UTCEPSS rescore
2026-06-12 23:08 UTCEPSS rescore
2026-06-06 13:44 UTCEPSS rescore
2026-06-06 13:44 UTCEPSS rescore
2026-06-05 22:44 UTCEPSS rescore
2026-06-05 22:44 UTCEPSS rescore
2026-06-05 06:07 UTCEPSS rescore
2026-06-04 13:09 UTCEPSS rescore
2026-06-04 13:09 UTCEPSS rescore
2026-06-02 20:10 UTCEPSS rescore
2026-06-02 20:10 UTCEPSS rescore
2026-06-01 13:49 UTCEPSS rescore
2026-06-01 13:49 UTCEPSS rescore
2026-05-31 22:28 UTCEPSS rescore
2026-05-31 22:28 UTCEPSS rescore
2026-05-31 03:24 UTCEG score recompute
2026-05-31 03:24 UTCVendor advisory
2026-05-31 03:24 UTCGHSA enrichment
2026-05-31 00:13 UTCEPSS rescore
2026-05-31 00:13 UTCEPSS rescore
2026-05-29 13:40 UTCEPSS rescore
2026-05-28 21:36 UTCOSV refresh
2026-05-28 13:42 UTCEPSS rescore

Show 17 more

2026-05-28 13:42 UTCEPSS rescore
2026-05-27 13:37 UTCEPSS rescore
2026-05-27 13:37 UTCEPSS rescore
2026-05-26 13:41 UTCEPSS rescore
2026-05-26 13:41 UTCEPSS rescore
2026-05-26 07:16 UTCEPSS rescore
2026-05-26 07:16 UTCEPSS rescore
2026-05-26 07:16 UTCEPSS rescore
2026-05-24 16:42 UTCEPSS rescore
2026-05-22 21:15 UTCEPSS rescore
2026-05-22 21:15 UTCEPSS rescore
2026-05-22 21:15 UTCEPSS rescore
2026-05-20 22:36 UTCEPSS rescore
2026-05-20 11:20 UTCEPSS rescore
2026-05-20 11:20 UTCEPSS rescore
2026-05-18 21:29 UTCEPSS rescore
2026-05-18 21:29 UTCEPSS rescore

Frequently asked(4)

What is CVE-2007-0956?

CVE-2007-0956 is a none vulnerability published on April 6, 2007. 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.

When was CVE-2007-0956 disclosed?

CVE-2007-0956 was first published in the National Vulnerability Database on April 6, 2007, with the most recent update on April 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2007-0956 actively exploited?

CVE-2007-0956 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 96.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

How do I remediate CVE-2007-0956?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2007-0956, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2007-0956

Published

Last Modified

References (60)

Patch Availability(2)

Weakness Classification(1)

All Vendor Advisories

Data Freshness Timeline

Frequently asked(4)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2007-0956?

Same vendor

Same CWE

CVE-2007-0956

📅 Published

🔄 Last Modified

🔗 References (60)

Patch Availability(2)

Weakness Classification(1)

All Vendor Advisories

Data Freshness Timeline

❓ Frequently asked(4)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2007-0956?

🔗 Related CVEs(same vendor + same CWE)

Same vendor

Same CWE

Published

Last Modified

References (60)

Frequently asked(4)

Related CVEs(same vendor + same CWE)