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
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 29%CVSS: 9.8Exploit: NoneExposed: 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)
EPSS
97.9%
KEV
Not listed

Published

July 28, 2010

Last Modified

April 29, 2026

Advisory Details (7)

Auto-updated May 10, 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

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
generic

CEC Juniper Community

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

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.

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 5× in last 7d / 36× 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.

  1. 2026-07-06 02:19 UTCEPSS rescore
  2. 2026-07-06 02:19 UTCEPSS rescore
  3. 2026-07-05 02:26 UTCEPSS rescore
  4. 2026-07-02 14:01 UTCEPSS rescore
  5. 2026-07-01 15:02 UTCEPSS rescore
  6. 2026-06-29 14:02 UTCEPSS rescore
  7. 2026-06-29 14:02 UTCEPSS rescore
  8. 2026-06-28 04:52 UTCEPSS rescore
  9. 2026-06-28 04:52 UTCEPSS rescore
  10. 2026-06-27 03:05 UTCEPSS rescore
  11. 2026-06-25 13:46 UTCEPSS rescore
  12. 2026-06-24 14:02 UTCEPSS rescore
  13. 2026-06-24 14:02 UTCEPSS rescore
  14. 2026-06-23 21:30 UTCEPSS rescore
  15. 2026-06-23 21:29 UTCEPSS rescore
  16. 2026-06-22 14:22 UTCEPSS rescore
  17. 2026-06-22 14:22 UTCEPSS rescore
  18. 2026-06-21 14:53 UTCEPSS rescore
  19. 2026-06-21 01:56 UTCEPSS rescore
  20. 2026-06-21 01:56 UTCEPSS rescore
  21. 2026-06-19 20:23 UTCOSV refresh
  22. 2026-06-18 17:49 UTCEPSS rescore
  23. 2026-06-18 17:49 UTCEPSS rescore
  24. 2026-06-17 17:49 UTCEPSS rescore
  25. 2026-06-17 17:49 UTCEPSS rescore
Show 72 more
  1. 2026-06-16 17:49 UTCEPSS rescore
  2. 2026-06-15 17:44 UTCEPSS rescore
  3. 2026-06-14 23:14 UTCEPSS rescore
  4. 2026-06-13 22:57 UTCEPSS rescore
  5. 2026-06-13 22:57 UTCEPSS rescore
  6. 2026-06-13 22:57 UTCEPSS rescore
  7. 2026-06-12 23:08 UTCEPSS rescore
  8. 2026-06-12 23:08 UTCEPSS rescore
  9. 2026-06-11 13:56 UTCEPSS rescore
  10. 2026-06-10 22:14 UTCEPSS rescore
  11. 2026-06-10 13:17 UTCEPSS rescore
  12. 2026-06-06 13:44 UTCEPSS rescore
  13. 2026-06-06 13:44 UTCEPSS rescore
  14. 2026-06-05 22:44 UTCEPSS rescore
  15. 2026-06-05 22:44 UTCEPSS rescore
  16. 2026-06-05 06:07 UTCEPSS rescore
  17. 2026-06-05 06:07 UTCEPSS rescore
  18. 2026-06-04 13:09 UTCEPSS rescore
  19. 2026-06-04 13:09 UTCEPSS rescore
  20. 2026-06-02 20:10 UTCEPSS rescore
  21. 2026-06-02 20:10 UTCEPSS rescore
  22. 2026-05-31 22:28 UTCEPSS rescore
  23. 2026-05-31 22:28 UTCEPSS rescore
  24. 2026-05-31 00:43 UTCOSV refresh
  25. 2026-05-31 00:14 UTCEPSS rescore
  26. 2026-05-31 00:13 UTCEPSS rescore
  27. 2026-05-29 13:40 UTCEPSS rescore
  28. 2026-05-28 13:42 UTCEPSS rescore
  29. 2026-05-28 13:42 UTCEPSS rescore
  30. 2026-05-26 13:41 UTCEPSS rescore
  31. 2026-05-26 13:41 UTCEPSS rescore
  32. 2026-05-26 07:16 UTCEPSS rescore
  33. 2026-05-26 07:16 UTCEPSS rescore
  34. 2026-05-24 16:43 UTCEPSS rescore
  35. 2026-05-22 21:15 UTCEPSS rescore
  36. 2026-05-22 21:15 UTCEPSS rescore
  37. 2026-05-22 21:15 UTCEPSS rescore
  38. 2026-05-21 22:39 UTCEPSS rescore
  39. 2026-05-20 22:37 UTCEPSS rescore
  40. 2026-05-20 22:37 UTCEPSS rescore
  41. 2026-05-20 22:37 UTCEPSS rescore
  42. 2026-05-20 11:21 UTCEPSS rescore
  43. 2026-05-20 11:21 UTCEPSS rescore
  44. 2026-05-20 09:42 UTCEG score recompute
  45. 2026-05-20 09:42 UTCVendor advisory
  46. 2026-05-20 09:42 UTCGHSA enrichment
  47. 2026-05-20 05:39 UTCEG score recompute
  48. 2026-05-20 05:39 UTCVendor advisory
  49. 2026-05-20 05:39 UTCGHSA enrichment
  50. 2026-05-20 01:37 UTCEG score recompute
  51. 2026-05-20 01:37 UTCVendor advisory
  52. 2026-05-20 01:37 UTCGHSA enrichment
  53. 2026-05-19 21:36 UTCEG score recompute
  54. 2026-05-19 21:36 UTCVendor advisory
  55. 2026-05-19 21:36 UTCGHSA enrichment
  56. 2026-05-19 17:32 UTCEG score recompute
  57. 2026-05-19 17:32 UTCVendor advisory
  58. 2026-05-19 17:32 UTCGHSA enrichment
  59. 2026-05-19 13:24 UTCEG score recompute
  60. 2026-05-19 13:24 UTCVendor advisory
  61. 2026-05-19 13:24 UTCGHSA enrichment
  62. 2026-05-19 09:22 UTCEG score recompute
  63. 2026-05-19 09:22 UTCVendor advisory
  64. 2026-05-19 09:22 UTCGHSA enrichment
  65. 2026-05-19 05:21 UTCEG score recompute
  66. 2026-05-19 05:21 UTCVendor advisory
  67. 2026-05-19 05:20 UTCGHSA enrichment
  68. 2026-05-19 01:18 UTCEG score recompute
  69. 2026-05-19 01:18 UTCVendor advisory
  70. 2026-05-19 01:18 UTCGHSA enrichment
  71. 2026-05-18 21:29 UTCEPSS rescore
  72. 2026-05-18 21:29 UTCEPSS rescore

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 97.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
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.

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