CVE-2023-2953

HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2023-05-31. NVD baseline CVSS 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 2%CVSS: 7.5Exploit: None knownExposed: 0

A fix is available — apply it.

A vulnerability was found in openldap. This security flaw causes a null pointer dereference in ber_memalloc_x() function.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
50(Track)
EG Risk 50/100SSVC: 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
Severity75% × 45%
Exploitation2% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
2%
EPSS %ILE
79%
KEV
Not listed

Published

May 30, 2023

Last Modified

January 10, 2025

References (18)

Vendor Advisories for CVE-2023-2953(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(6)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntuslapi-dev (2.5.16+dfsg-0ubuntu0.22.04.2) @ jammy2026-05-25ubuntu
ubuntuslapd (2.4.42+dfsg-2ubuntu3.13+esm2) @ xenial2026-05-25ubuntu
redhatopenldap-0:2.6.2-3.el9_2.12025-05-27redhat
redhatopenldap-0:2.6.2-1.el9_0.12025-05-27redhat
redhatopenldap-0:2.4.46-20.el8_82024-08-29redhat
redhatopenldap-0:2.4.46-19.el8_102024-07-02redhat

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

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
openldap1:1.2.12-1 ... 2:1.2.12.1-1.0.1 (49 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
openldap1:1.2.12-1 ... 2:1.2.12.1-1.0.1 (32 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
openldap—2.5.16+dfsg-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
openldap—2.5.16+dfsg-1—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Additional Vendor Advisories

(6)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 5× in last 7d / 24× 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 172 total refreshes for this CVE.

  1. 2026-09-24 14:01 UTCEPSS rescore
  2. 2026-09-23 13:45 UTCEPSS rescore
  3. 2026-09-23 10:53 UTCOSV refresh
  4. 2026-09-22 14:45 UTCEPSS rescore
  5. 2026-09-20 20:14 UTCEPSS rescore
  6. 2026-09-16 14:05 UTCEPSS rescore
  7. 2026-09-13 16:44 UTCEPSS rescore
  8. 2026-09-12 14:58 UTCEPSS rescore
  9. 2026-09-11 14:50 UTCEPSS rescore
  10. 2026-09-11 09:34 UTCEPSS rescore
  11. 2026-09-08 21:57 UTCEPSS rescore
  12. 2026-09-07 15:59 UTCEPSS rescore
  13. 2026-09-06 13:45 UTCEPSS rescore
  14. 2026-09-05 15:25 UTCEPSS rescore
  15. 2026-09-04 13:58 UTCEPSS rescore
  16. 2026-09-04 05:46 UTCOSV refresh
  17. 2026-09-04 05:04 UTCEPSS rescore
  18. 2026-09-02 14:09 UTCEPSS rescore
  19. 2026-09-01 13:51 UTCEPSS rescore
  20. 2026-08-30 19:15 UTCEPSS rescore
  21. 2026-08-30 01:19 UTCEPSS rescore
  22. 2026-08-28 21:38 UTCEPSS rescore
  23. 2026-08-27 14:23 UTCEPSS rescore
  24. 2026-08-26 14:43 UTCEPSS rescore
  25. 2026-08-25 13:46 UTCEPSS rescore
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  1. 2026-08-24 14:14 UTCEPSS rescore
  2. 2026-08-23 00:17 UTCEPSS rescore
  3. 2026-08-21 23:46 UTCEPSS rescore
  4. 2026-08-20 22:53 UTCEPSS rescore
  5. 2026-08-19 17:02 UTCEPSS rescore
  6. 2026-08-18 13:46 UTCEPSS rescore
  7. 2026-08-17 16:29 UTCOSV refresh
  8. 2026-08-17 13:44 UTCEPSS rescore
  9. 2026-08-16 14:53 UTCEPSS rescore
  10. 2026-08-16 02:12 UTCEPSS rescore
  11. 2026-08-15 01:28 UTCEPSS rescore
  12. 2026-08-13 21:58 UTCEPSS rescore
  13. 2026-08-12 13:48 UTCEPSS rescore
  14. 2026-08-11 13:39 UTCEPSS rescore
  15. 2026-08-09 13:44 UTCEPSS rescore
  16. 2026-08-08 16:34 UTCEPSS rescore
  17. 2026-08-07 16:24 UTCEPSS rescore
  18. 2026-08-06 13:44 UTCEPSS rescore
  19. 2026-08-05 19:15 UTCEPSS rescore
  20. 2026-08-05 19:15 UTCEPSS rescore
  21. 2026-08-04 15:07 UTCEPSS rescore
  22. 2026-08-04 10:35 UTCEPSS rescore
  23. 2026-08-03 10:34 UTCEPSS rescore
  24. 2026-08-02 11:57 UTCOSV refresh
  25. 2026-08-02 02:25 UTCEPSS rescore
  26. 2026-08-02 02:24 UTCEPSS rescore
  27. 2026-08-01 04:13 UTCEPSS rescore
  28. 2026-08-01 04:13 UTCEPSS rescore
  29. 2026-07-30 16:26 UTCEPSS rescore
  30. 2026-07-30 16:26 UTCEPSS rescore
  31. 2026-07-30 01:28 UTCEPSS rescore
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  33. 2026-07-28 15:34 UTCEPSS rescore
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  35. 2026-07-27 14:10 UTCEPSS rescore
  36. 2026-07-26 14:52 UTCEPSS rescore
  37. 2026-07-26 14:52 UTCEPSS rescore
  38. 2026-07-25 14:16 UTCEPSS rescore
  39. 2026-07-24 14:15 UTCEPSS rescore
  40. 2026-07-23 14:16 UTCEPSS rescore
  41. 2026-07-23 14:16 UTCEPSS rescore
  42. 2026-07-23 02:21 UTCEG score recompute
  43. 2026-07-22 23:09 UTCEG score recompute
  44. 2026-07-22 14:06 UTCEPSS rescore
  45. 2026-07-22 14:06 UTCEPSS rescore
  46. 2026-07-21 15:23 UTCEPSS rescore
  47. 2026-07-20 17:06 UTCEPSS rescore
  48. 2026-07-19 14:29 UTCEPSS rescore
  49. 2026-07-19 14:29 UTCEPSS rescore
  50. 2026-07-19 02:27 UTCEPSS rescore
  51. 2026-07-19 02:27 UTCEPSS rescore
  52. 2026-07-18 10:03 UTCEPSS rescore
  53. 2026-07-18 10:03 UTCEPSS rescore
  54. 2026-07-16 17:01 UTCEPSS rescore
  55. 2026-07-16 17:01 UTCEPSS rescore
  56. 2026-07-15 19:19 UTCOSV refresh
  57. 2026-07-15 16:56 UTCEPSS rescore
  58. 2026-07-15 16:56 UTCEPSS rescore
  59. 2026-07-15 01:58 UTCEPSS rescore
  60. 2026-07-15 01:58 UTCEPSS rescore
  61. 2026-07-13 22:28 UTCEPSS rescore
  62. 2026-07-13 22:28 UTCEPSS rescore
  63. 2026-07-13 06:11 UTCEPSS rescore
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  65. 2026-07-12 05:45 UTCEPSS rescore
  66. 2026-07-11 08:25 UTCEPSS rescore
  67. 2026-07-11 08:25 UTCEPSS rescore
  68. 2026-07-09 19:08 UTCEPSS rescore
  69. 2026-07-09 19:08 UTCEPSS rescore
  70. 2026-07-08 15:13 UTCEPSS rescore
  71. 2026-07-07 13:44 UTCEPSS rescore
  72. 2026-07-06 16:26 UTCEPSS rescore
  73. 2026-07-06 16:26 UTCEPSS rescore
  74. 2026-07-05 02:28 UTCEPSS rescore
  75. 2026-07-04 06:29 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2023-2953?
CVE-2023-2953 is a high vulnerability published on May 30, 2023. A vulnerability was found in openldap. This security flaw causes a null pointer dereference in bermemallocx() function.
When was CVE-2023-2953 disclosed?
CVE-2023-2953 was first published in the National Vulnerability Database on May 30, 2023, with the most recent update on January 10, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-2953 actively exploited?
CVE-2023-2953 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2% probability of exploitation in the next 30 days, which ranks it in the top 20.9% of all scored CVEs.
What is the CVSS score of CVE-2023-2953?
CVE-2023-2953 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2023-2953?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-2953, 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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