CVE-2023-4458

MEDIUMNVD 4.04.0—
EchelonGraph scoreMEDIUM confidence

Score 4.0 from GitHub Security Advisory published 2024-11-14. NVD baseline CVSS 4.0; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
4.0EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 4.0Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

A flaw was found within the parsing of extended attributes in the kernel ksmbd module. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated buffer. An attacker can leverage this to disclose sensitive information on affected installations of Linux. Only systems with ksmbd enabled are vulnerable to this CVE.

CVSS v3
4.0
EG Score
4.0(medium)
EG Risk
18(Track)
EG Risk 18/100SSVC: 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
Severity40% × 45%
Exploitation1% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
54%
KEV
Not listed

Published

November 14, 2024

Last Modified

August 19, 2025

References (3)

Weakness Classification(1)

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

All Vendor Advisories

(1)

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 9× in last 7d / 46× 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 127 total refreshes for this CVE.

  1. 2026-08-07 16:25 UTCEPSS rescore
  2. 2026-08-06 13:45 UTCEPSS rescore
  3. 2026-08-05 19:15 UTCEPSS rescore
  4. 2026-08-04 15:07 UTCEPSS rescore
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  11. 2026-07-31 12:12 UTCOSV refresh
  12. 2026-07-30 16:26 UTCEPSS rescore
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  15. 2026-07-28 15:34 UTCEPSS rescore
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  17. 2026-07-27 14:10 UTCEPSS rescore
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  21. 2026-07-24 14:16 UTCEPSS rescore
  22. 2026-07-23 14:16 UTCEPSS rescore
  23. 2026-07-23 02:27 UTCEG score recompute
  24. 2026-07-22 23:13 UTCEG score recompute
  25. 2026-07-22 14:06 UTCEPSS rescore
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  1. 2026-07-21 15:23 UTCEPSS rescore
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  3. 2026-07-20 17:06 UTCEPSS rescore
  4. 2026-07-19 14:29 UTCEPSS rescore
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  6. 2026-07-19 02:27 UTCEPSS rescore
  7. 2026-07-18 10:03 UTCEPSS rescore
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  9. 2026-07-16 17:01 UTCEPSS rescore
  10. 2026-07-15 16:56 UTCEPSS rescore
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  12. 2026-07-15 01:59 UTCEPSS rescore
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  14. 2026-07-13 22:28 UTCEPSS rescore
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  16. 2026-07-13 19:38 UTCOSV refresh
  17. 2026-07-13 06:11 UTCEPSS rescore
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  19. 2026-07-12 05:45 UTCEPSS rescore
  20. 2026-07-11 08:26 UTCEPSS rescore
  21. 2026-07-09 19:08 UTCEPSS rescore
  22. 2026-07-08 15:13 UTCEPSS rescore
  23. 2026-07-07 13:44 UTCEPSS rescore
  24. 2026-07-07 13:44 UTCEPSS rescore
  25. 2026-07-06 16:26 UTCEPSS rescore
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  27. 2026-07-06 02:22 UTCEPSS rescore
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  31. 2026-07-02 16:59 UTCEPSS rescore
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  38. 2026-06-28 04:55 UTCEPSS rescore
  39. 2026-06-27 03:07 UTCEPSS rescore
  40. 2026-06-25 17:16 UTCOSV refresh
  41. 2026-06-25 13:48 UTCEPSS rescore
  42. 2026-06-25 13:48 UTCEPSS rescore
  43. 2026-06-24 14:04 UTCEPSS rescore
  44. 2026-06-24 14:04 UTCEPSS rescore
  45. 2026-06-23 21:31 UTCEPSS rescore
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  47. 2026-06-22 14:24 UTCEPSS rescore
  48. 2026-06-22 14:24 UTCEPSS rescore
  49. 2026-06-21 14:55 UTCEPSS rescore
  50. 2026-06-21 14:55 UTCEPSS rescore
  51. 2026-06-21 01:58 UTCEPSS rescore
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  53. 2026-06-19 19:24 UTCEPSS rescore
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  55. 2026-06-18 17:51 UTCEPSS rescore
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  59. 2026-06-15 17:47 UTCEPSS rescore
  60. 2026-06-14 23:16 UTCEPSS rescore
  61. 2026-06-13 22:59 UTCEPSS rescore
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  63. 2026-06-12 23:11 UTCEPSS rescore
  64. 2026-06-12 23:10 UTCEPSS rescore
  65. 2026-06-11 13:59 UTCEPSS rescore
  66. 2026-06-10 22:17 UTCEPSS rescore
  67. 2026-06-10 13:21 UTCEPSS rescore
  68. 2026-06-08 14:16 UTCEPSS rescore
  69. 2026-06-08 14:16 UTCEPSS rescore
  70. 2026-06-08 06:58 UTCOSV refresh
  71. 2026-06-07 15:24 UTCEPSS rescore
  72. 2026-06-07 15:23 UTCEPSS rescore
  73. 2026-06-06 13:46 UTCEPSS rescore
  74. 2026-06-06 13:46 UTCEPSS rescore
  75. 2026-06-05 22:46 UTCEPSS rescore

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2023-4458?
CVE-2023-4458 is a medium vulnerability published on November 14, 2024. A flaw was found within the parsing of extended attributes in the kernel ksmbd module. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated buffer. An attacker can leverage this to disclose sensitive information on…
When was CVE-2023-4458 disclosed?
CVE-2023-4458 was first published in the National Vulnerability Database on November 14, 2024, with the most recent update on August 19, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-4458 actively exploited?
CVE-2023-4458 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 45.8% of all scored CVEs.
What is the CVSS score of CVE-2023-4458?
CVE-2023-4458 has a CVSS v3 base score of 4.0 (NVD).
How do I remediate CVE-2023-4458?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-4458, 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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