CVE-2013-4449

4.3 MEDIUM 11% exploit odds No fix listed Denial of service Server

What it is

The rwm overlay in OpenLDAP 2.4.23, 2.4.36, and earlier does not properly count references, which allows remote attackers to cause a denial of service (slapd crash) by unbinding immediately after a search request, which triggers rwm_conn_destroy to free the session context while it is being used by rwm_op_search.

At a glance

Exploitability: Can be exploited over the network without logging in. Limited direct impact.
Exploit odds: 10.9% chance of exploitation in the next 30 days (EPSS). Higher than most.
Fix: No patch or advisory is linked yet. Look at mitigations or restrict exposure.

Timeline

2014-02-05 18:55 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-06-16 23:57 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: no, CISA does not list it.
Exploit odds: 10.9% in the next 30 days (EPSS).
Severity: 4.3 MEDIUM (CVSS).
Fix: none linked yet, which raises it.

Details

Published: 2014-02-05 18:55 UTC
Last modified: 2026-06-16 23:57 UTC
Exploit probability: 10.9% · EPSS, next 30 days
Weakness: CWE-189
Record status: Modified

Affected

Debian Linux 7.0
Debian Linux 8.0
Openldap ≤ 2.4.36
Openldap 2.4.6
Openldap 2.4.7
Openldap 2.4.8
Openldap 2.4.9
Openldap 2.4.10

Attack profile CVSS 2.0 · 4.3

Attack vector: Network
Complexity: Medium
Authentication: None
Confidentiality: None
Integrity: None
Availability: Partial

Raw vector

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

Is it in your code?

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References

NVD record · CVE.org record