THREATPORT/VULNERABILITY/CVE-2007-4000
HIGH SEVERITY

CVE-2007-4000

Kerberos 5 vulnerability

CVSS
8.5
EPSS
6.1%
EPSS pct
93th
Exploited
No known
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.
Affected vendor
Mit
Affected product
Kerberos 5
CVSS vector
AV:N/AC:M/Au:S/C:C/I:C/A:C
Weakness type (CWE)
  • CWE-824 — Access of Uninitialized Pointer
Published
2007-09-05

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, medium attack complexity, requiring single-factor authentication. Successful exploitation leads to complete impact to confidentiality, complete impact to integrity, complete impact to availability.

Its EPSS score of 6.1% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 93% of all scored CVEs.

Check your external exposure to CVE-2007-4000

  • Confirm whether Mit Kerberos 5 is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2007-4000.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2007-4000

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2007-4000 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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