HIGH
CVE-2011-1528
CWE-20Published: October 20, 2011· Updated: Jun 16, 2026
7.8
CVSS v3.1
Official Description
The krb5_ldap_lockout_audit function in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.8 through 1.8.4 and 1.9 through 1.9.1, when the LDAP back end is used, allows remote attackers to cause a denial of service (assertion failure and daemon exit) via unspecified vectors, related to the locked_check_p function. NOTE: the Berkeley DB vector is covered by CVE-2011-4151.
Technical Analysis
CVE-2011-1528 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 ComplexityLow
Privileges Req.
User Interaction
Scope
Impact
ConfidentialityNone
IntegrityNone
AvailabilityC
AV:N/AC:L/Au:N/C:N/I:N/A:C
Affected Vendors & Products
mit1 product(s)
kerberos 5
Source: NVD CPE · 7 total CPE entries
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.
Official Patches & Advisories
All References (14)
→
→
http://www.kb.cert.org/vuls/id/659251US Government Resource
→
http://www.redhat.com/support/errata/RHSA-2011-1379.htmlVendor Advisory
→
→
http://www.kb.cert.org/vuls/id/659251US Government Resource
→
http://www.redhat.com/support/errata/RHSA-2011-1379.htmlVendor Advisory
Quick Facts
CVE IDCVE-2011-1528
CVSS Score7.8 / 10
SeverityHIGH
WeaknessCWE-20
CISA KEVNo
Affected1 vendor(s)
PublishedOct 20, 2011
Related CVEs (CWE-20)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2011-1528 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.