CVE-2011-4079: n/a vulnerability

CVE-2011-4079: Off-by-one error in the UTF8StringNormalize function in OpenLDAP 2.4.26 and earlier allows remote attackers...

Off-by-one error in the UTF8StringNormalize function in OpenLDAP 2.4.26 and earlier allows remote attackers to cause a denial of service (slapd crash) via a zero-length string that triggers a heap-based buffer overflow, as demonstrated using an empty postalAddressAttribute value in an LDIF entry.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 6, 2024, 23:53 UTC (UTC+00:00)

Security readout for executives and security teams

This is an old OpenLDAP denial-of-service issue. A malformed zero-length string can crash slapd, potentially interrupting authentication, directory lookups, and dependent business services. The source bundle does not provide CVSS scoring or evidence of active exploitation. Exposure is most likely where OpenLDAP slapd 2.4.26 or earlier is still deployed, including legacy Linux distributions, appliances, or directory services that process untrusted LDAP writes or LDIF imports. Treat as a legacy hygiene and availability risk. Prioritize remediation if LDAP supports authentication, access control, VPN, email, or other core business services. Mitigation focus: Upgrade OpenLDAP using vendor-supported security packages or maintained upstream releases.; Confirm deployed slapd versions are newer than OpenLDAP 2.4.26.; Restrict LDAP write access to trusted authenticated users and networks..

Prepared: Jun 27, 2026, 17:48 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Oct 27, 2011, 20:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors

0Timeline events

0ADP providers

3Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

CVE List V5 sourceCVE List V5
https://bugzilla.redhat.com/show_bug.cgi?id=749324CVE reference · x_refsource_MISC
openldap-utf8stringnormalize-dos(70991)CVE reference · vdb-entry, x_refsource_XF

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

Weakness

CWE details

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