CVE-2024-23083Network attack vector

Service interruption via locale-triggered null dereference

Published Apr 10, 2024 · Updated Jul 9, 2026

Null pointer dereference in Time4J Base 5.9.3 allows remote attackers to interrupt a dependent service via crafted locale input. The claim identifies FormatUtils.useDefaultWeekmodel(Locale) as the locus, but published sources do not identify the exact null value or dereference operation. The CVE is disputed because multiple third parties found insufficient evidence that the reported exception constitutes a security vulnerability.

CVSS severity5.3
Medium
EPSS probability0.66%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Null pointer dereference in Time4J Base 5.9.3 allows remote attackers to interrupt a dependent service via crafted locale input. The claim identifies FormatUtils.useDefaultWeekmodel(Locale) as the locus, but published sources do not identify the exact null value or dereference operation. The CVE is disputed because multiple third parties found insufficient evidence that the reported exception constitutes a security vulnerability.

The record

CVE
CVE-2024-23083
Published
Apr 10, 2024
Updated
Jul 9, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-476
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 10, 2024CVE publishedPublication date reported by the CVE source.
  2. Jul 9, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.3CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-476NULL Pointer Dereference

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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