CVE-2023-42464

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2023-09-20. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 2%CVSS: 9.8Exploit: NoneExposed: 0

A fix is available — apply it.

A Type Confusion vulnerability was found in the Spotlight RPC functions in afpd in Netatalk 3.1.x before 3.1.17. When parsing Spotlight RPC packets, one encoded data structure is a key-value style dictionary where the keys are character strings, and the values can be any of the supported types in the underlying protocol. Due to a lack of type checking in callers of the dalloc_value_for_key() function, which returns the object associated with a key, a malicious actor may be able to fully control the value of the pointer and theoretically achieve Remote Code Execution on the host. This issue is similar to CVE-2023-34967.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
49(Track)
EG Risk 49/100SSVC: 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%
Exploitation2% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
76.1%
KEV
Not listed

Published

September 20, 2023

Last Modified

June 17, 2026

Advisory Details (6)

Auto-updated May 25, 2026
Patch available.
generic

Netatalk - Netatalk Security Advisory

https://netatalk.io/security/CVE-2023-42464
generic Patch Available

[SECURITY] [DLA 3584-1] netatalk security update

https://lists.debian.org/debian-lts-announce/2023/09/msg00031.html
generic

CVE-2023-42464 · Issue #486 · Netatalk/netatalk · GitHub

https://github.com/Netatalk/netatalk/issues/486
generic

[SECURITY] [DSA 5503-1] netatalk security update

https://www.debian.org/security/2023/dsa-5503
generic

Netatalk - Netatalk, Free and Open Source File Server

https://netatalk.sourceforge.io/CVE-2023-42464.php
generic

Netatalk - Netatalk, Free and Open Source File Server

https://netatalk.sourceforge.io/

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntunetatalk (3.1.12~ds-4ubuntu0.20.04.3) @ focal2026-05-24ubuntu

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.

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 12× in last 7d / 51× 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 107 total refreshes for this CVE.

  1. 2026-07-23 14:16 UTCEPSS rescore
  2. 2026-07-23 14:16 UTCEPSS rescore
  3. 2026-07-23 02:26 UTCEG score recompute
  4. 2026-07-22 23:13 UTCEG score recompute
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  17. 2026-07-15 09:19 UTCOSV refresh
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  1. 2026-07-11 08:26 UTCEPSS rescore
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  18. 2026-06-27 09:34 UTCOSV refresh
  19. 2026-06-27 03:07 UTCEPSS rescore
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  21. 2026-06-25 13:48 UTCEPSS rescore
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  23. 2026-06-24 14:04 UTCEPSS rescore
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  49. 2026-06-10 22:17 UTCEPSS rescore
  50. 2026-06-10 13:21 UTCEPSS rescore
  51. 2026-06-10 13:21 UTCEPSS rescore
  52. 2026-06-09 20:17 UTCOSV refresh
  53. 2026-06-08 14:16 UTCEPSS rescore
  54. 2026-06-08 14:16 UTCEPSS rescore
  55. 2026-06-07 15:23 UTCEPSS rescore
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Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2023-42464?
CVE-2023-42464 is a critical vulnerability published on September 20, 2023. A Type Confusion vulnerability was found in the Spotlight RPC functions in afpd in Netatalk 3.1.x before 3.1.17. When parsing Spotlight RPC packets, one encoded data structure is a key-value style dictionary where the keys are character strings, and the values can be any of the supported types in…
When was CVE-2023-42464 disclosed?
CVE-2023-42464 was first published in the National Vulnerability Database on September 20, 2023, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-42464 actively exploited?
CVE-2023-42464 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 76.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2023-42464?
CVE-2023-42464 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2023-42464?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-42464, 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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