CVE-2010-0211

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory published 2022-05-02. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Weaponized
9.8EG
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • Public exploit code is available (Exploit-DB (verified), epss top5pct, public exploit)
CISA-KEV: Not listedEPSS PROB: 28%CVSS: 9.8Exploit: Exploit-DB (verified) · epss top5pct · public exploitExposed: 0

A fix is available — apply it.

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.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
75(Track*)
EG Risk 75/100SSVC: Track*

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity98% × 45%
Exploitation65% × 40%
Automatability30% × 15%
Action: Watch closely — could escalate to Attend.
EPSS PROB
28%
EPSS %ILE
98%
KEV
Not listed

Published

July 28, 2010

Last Modified

April 29, 2026

Advisory Details (7)

Auto-updated Aug 26, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic🟡 PoC Available

6570 – Two OpenLDAP preauth vulnerabilities

http://www.openldap.org/its/index.cgi/Software%20Bugs?id=6570
generic

OpenLDAP: Multiple vulnerabilities (GLSA 201406-36) — Gentoo security

http://security.gentoo.org/glsa/glsa-201406-36.xml
generic

CEC Juniper Community

http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10705
generic

About Secunia Research | Flexera

http://secunia.com/advisories/42787
generic

About Secunia Research | Flexera

http://secunia.com/advisories/40687
generic

About Secunia Research | Flexera

http://secunia.com/advisories/40677
generic

About Secunia Research | Flexera

http://secunia.com/advisories/40639

Patch Availability(3)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntuslapd (2.4.21-0ubuntu5.2) @ lucid2026-05-20ubuntu
redhatopenldap-0:2.2.13-12.el4_8.32010-07-20redhat
redhatopenldap-0:2.3.43-12.el5_5.12010-07-20redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(5 across 5 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
openldap—2.4.23-1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
openldap—2.4.23-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
openldap—2.4.23-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
openldap—2.4.23-1—
Debian:5.0(1)
PackageVulnerable rangeFixed inDependents
openldap2.4.11-1, 2.4.11-1+lenny12.4.11-1+lenny2—

All Vendor Advisories

(3)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 3× in last 7d / 12× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 123 total refreshes for this CVE.

  1. 2026-08-26 22:39 UTCOSV refresh
  2. 2026-08-26 14:40 UTCEPSS rescore
  3. 2026-08-25 13:43 UTCEPSS rescore
  4. 2026-08-19 16:58 UTCEPSS rescore
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  14. 2026-07-25 13:41 UTCOSV refresh
  15. 2026-07-23 14:14 UTCEPSS rescore
  16. 2026-07-23 01:00 UTCEG score recompute
  17. 2026-07-23 00:38 UTCEG score recompute
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  19. 2026-07-22 21:44 UTCEG score recompute
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  1. 2026-07-16 16:58 UTCEPSS rescore
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  9. 2026-07-08 08:27 UTCOSV refresh
  10. 2026-07-06 02:19 UTCEPSS rescore
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  27. 2026-06-21 14:53 UTCEPSS rescore
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  30. 2026-06-19 20:23 UTCOSV refresh
  31. 2026-06-18 17:49 UTCEPSS rescore
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  56. 2026-05-31 22:28 UTCEPSS rescore
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  58. 2026-05-31 00:43 UTCOSV refresh
  59. 2026-05-31 00:14 UTCEPSS rescore
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Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Exploit-DBEDB-34348✓ verified
    First seen Jul 19, 2010

    OpenLDAP 2.4.22 - 'modrdn' Multiple Vulnerabilities

    Open source ↗

Frequently asked(5)

What is CVE-2010-0211?
CVE-2010-0211 is a critical vulnerability published on July 28, 2010. The slapmodrdn2mods function in modrdn.c in OpenLDAP 2.4.22 does not check the return value of a call to the smrnormalize 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…
When was CVE-2010-0211 disclosed?
CVE-2010-0211 was first published in the National Vulnerability Database on July 28, 2010, with the most recent update on April 29, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2010-0211 actively exploited?
CVE-2010-0211 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 28% probability of exploitation in the next 30 days, which ranks it in the top 2.0% of all scored CVEs.
What is the CVSS score of CVE-2010-0211?
CVE-2010-0211 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2010-0211?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2010-0211, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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