CVE-2024-24263Public exploitNetwork attack vector

Service crash via stale response buffer pointer

Published Feb 5, 2024 · Updated Jun 12, 2025

Use-after-free in Lotos WebServer 0.1.1 allows remote attackers to crash the service during HTTP response construction. response_append_status_line retains its original buffer pointer after buffer_cat_cstr can relocate the allocation through buffer_cat and realloc, so a later append uses stale memory. No authentication or user interaction is required; the reported consequence is a service crash, with no confidentiality or integrity impact.

CVSS severity7.5
High
EPSS probability0.71%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in Lotos WebServer 0.1.1 allows remote attackers to crash the service during HTTP response construction. response_append_status_line retains its original buffer pointer after buffer_cat_cstr can relocate the allocation through buffer_cat and realloc, so a later append uses stale memory. No authentication or user interaction is required; the reported consequence is a service crash, with no confidentiality or integrity impact.

The record

CVE
CVE-2024-24263
Published
Feb 5, 2024
Updated
Jun 12, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-416, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 5, 2024CVE publishedPublication date reported by the CVE source.
  2. Jun 12, 2025Record 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

7.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-416Use After Free
T1499.004Endpoint Denial of Service: Application or System Exploitation

Public exploit references

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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