CVE-2010-0211

Exp

The slap_modrdn2mods function in modrdn.c in OpenLDAP 2.4.22 does not check the return value of a call to the smr_normalize function, which allows remote attackers to cause a denial of service (segmentation fault) and possibly execute arbitrary code via a modrdn call with an RDN string containing invalid UTF-8 sequences, which triggers a free of an invalid, uninitialized pointer in the slap_mods_free function, as demonstrated using the Codenomicon LDAPv3 test suite.

Published: 2010-07-28 Last update: 2026-04-29 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2010-0211 is rated High Exploit Risk (88.5/100): CVSS Critical severity, with high exploitation likelihood (EPSS 42.63%, 97th percentile). 3 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2010-0211

EDB-ID Source Kind Published Link
34348 exploit_db edb 2010-07-19 Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2010-0211

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-12-18 42.37% 42.63% +0.26%
2 2025-08-20 42.63% 42.37% -0.26%
3 2025-06-12 — 42.63% —

Full EPSS history (15 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2010-0211

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.8 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 5.9 [email protected]
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2010-0211

OS Trackers for CVE-2010-0211

vendor priority summary link
debian not yet assigned CVE-2010-0211 not yet assigned priority: Debian including 1 source packages (openldap), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2010-0211
gentoo normal CVE-2010-0211: 1 GLSA(s) (201406-36), 1 atom(s) (net-nds/openldap); latest impact normal. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2010-0211
redhat high — https://access.redhat.com/security/cve/CVE-2010-0211
ubuntu medium CVE-2010-0211 medium priority: Ubuntu including 3 source packages (openldap, openldap2.2, openldap2.3), 18 status rows across 6 suites (dapper, hardy, jaunty, karmic, lucid, upstream): DNE 10, released 6, needs-triage 2. https://ubuntu.com/security/CVE-2010-0211

Affected software / configurations for CVE-2010-0211

Vendor Product Version Raw CPE
openldap openldap 2.4.22 cpe:2.3:a:openldap:openldap:2.4.22:*:*:*:*:*:*:*
vmware esxi 4.0 cpe:2.3:o:vmware:esxi:4.0:*:*:*:*:*:*:*
vmware esxi 4.1 cpe:2.3:o:vmware:esxi:4.1:*:*:*:*:*:*:*
opensuse opensuse 11.0 cpe:2.3:o:opensuse:opensuse:11.0:*:*:*:*:*:*:*
apple mac_os_x >= 10.6.0, < 10.6.5 cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*
apple mac_os_x_server >= 10.6.0, < 10.6.5 cpe:2.3:o:apple:mac_os_x_server:*:*:*:*:*:*:*:*

References for CVE-2010-0211

URL Tags
http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10705 Third Party Advisory
http://lists.apple.com/archives/security-announce/2010//Nov/msg00000.html Mailing List
http://lists.opensuse.org/opensuse-security-announce/2010-08/msg00001.html Mailing List
http://secunia.com/advisories/40639 Broken Link Vendor Advisory
http://secunia.com/advisories/40677 Broken Link Vendor Advisory
http://secunia.com/advisories/40687 Broken Link Vendor Advisory
http://secunia.com/advisories/42787 Broken Link
http://security.gentoo.org/glsa/glsa-201406-36.xml Third Party Advisory
http://support.apple.com/kb/HT4435 Issue Tracking
http://www.openldap.org/its/index.cgi/Software%20Bugs?id=6570 Exploit
http://www.redhat.com/support/errata/RHSA-2010-0542.html Broken Link
http://www.redhat.com/support/errata/RHSA-2010-0543.html Broken Link
http://www.securityfocus.com/archive/1/515545/100/0/threaded Broken Link Third Party Advisory VDB Entry
http://www.securityfocus.com/bid/41770 Broken Link Exploit Patch Third Party Advisory VDB Entry
http://www.securitytracker.com/id?1024221 Broken Link Third Party Advisory VDB Entry
http://www.vmware.com/security/advisories/VMSA-2011-0001.html Third Party Advisory
http://www.vupen.com/english/advisories/2010/1849 Broken Link Vendor Advisory
http://www.vupen.com/english/advisories/2010/1858 Broken Link Vendor Advisory
http://www.vupen.com/english/advisories/2011/0025 Broken Link
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