HOME VULNERABILITIESCVE-2007-4000

HIGH

CVE-2007-4000

CWE-824Published: September 5, 2007· Updated: Jun 16, 2026

8.5

CVSS v3.1

Official Description

The kadm5_modify_policy_internal function in lib/kadm5/srv/svr_policy.c in the Kerberos administration daemon (kadmind) in MIT Kerberos 5 (krb5) 1.5 through 1.6.2 does not properly check return values when the policy does not exist, which might allow remote authenticated users with the "modify policy" privilege to execute arbitrary code via unspecified vectors that trigger a write to an uninitialized pointer.

Technical Analysis

CVE-2007-4000 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorNetwork

Attack ComplexityM

Privileges Req.

User Interaction

Scope

Impact

ConfidentialityC

IntegrityC

AvailabilityC

AV:N/AC:M/Au:S/C:C/I:C/A:C

Affected Vendors & Products

Fedora1 product(s)

fedora

mit1 product(s)

kerberos 5

Source: NVD CPE · 2 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time

Offensive Security exploit database

GitHub PoC Search

Community PoC repositories

Rapid7 / Metasploit

Metasploit module search

Security advisories & exploits

Official NIST entry

CVE Program entry

External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttp://web.mit.edu/Kerberos/advisories/MITKRB5-SA-2007-006.txt

ADVISORYhttp://www.gentoo.org/security/en/glsa/glsa-200709-01.xml

ADVISORYhttp://www.kb.cert.org/vuls/id/377544

ADVISORYhttp://www.redhat.com/support/errata/RHSA-2007-0858.html

ADVISORYhttp://www.securityfocus.com/archive/1/478794/100/0/threaded

ADVISORYhttp://www.securityfocus.com/bid/25533

ADVISORYhttp://www.securitytracker.com/id?1018647

ADVISORYhttp://web.mit.edu/Kerberos/advisories/MITKRB5-SA-2007-006.txt

ADVISORYhttp://www.gentoo.org/security/en/glsa/glsa-200709-01.xml

ADVISORYhttp://www.kb.cert.org/vuls/id/377544

ADVISORYhttp://www.redhat.com/support/errata/RHSA-2007-0858.html

ADVISORYhttp://www.securityfocus.com/archive/1/478794/100/0/threaded

ADVISORYhttp://www.securityfocus.com/bid/25533

ADVISORYhttp://www.securitytracker.com/id?1018647

All References (44)

→

http://secunia.com/advisories/26676Broken Link

→

http://secunia.com/advisories/26680Broken Link

→

http://secunia.com/advisories/26700Broken Link

→

http://secunia.com/advisories/26728Broken Link

→

http://secunia.com/advisories/26783Broken Link

→

http://secunia.com/advisories/26987Broken Link

→

http://securityreason.com/securityalert/3092Broken Link

→

http://web.mit.edu/Kerberos/advisories/MITKRB5-SA-2007-006.txtVendor Advisory

→

http://www.gentoo.org/security/en/glsa/glsa-200709-01.xmlThird Party Advisory

→

http://www.kb.cert.org/vuls/id/377544Third Party Advisory · US Government Resource

→

http://www.mandriva.com/security/advisories?name=MDKSA-2007:174Broken Link

→

http://www.novell.com/linux/security/advisories/2007_19_sr.htmlBroken Link

→

http://www.redhat.com/support/errata/RHSA-2007-0858.htmlThird Party Advisory

→

http://www.securityfocus.com/archive/1/478794/100/0/threadedThird Party Advisory · VDB Entry

→

http://www.securityfocus.com/bid/25533Broken Link · Third Party Advisory · VDB Entry

Quick Facts

CVE IDCVE-2007-4000

CVSS Score8.5 / 10

SeverityHIGH

WeaknessCWE-824

CISA KEVNo

Affected2 vendor(s)

PublishedSep 5, 2007

Related CVEs (CWE-824)

Recommended Actions

→Apply vendor patches immediately
→Monitor CVE-2007-4000 in threat intel feeds
→Review IDS/IPS signatures for exploitation attempts

Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.

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