CVE-2024-53426

Application crash via fixed-length mDNS copy

Published Nov 21, 2024 · Updated Nov 26, 2024

Heap buffer overflow in Flow::dissectMDNS in ntop ntopng 6.2 allows local users to crash the application via crafted mDNS data. The function passes a fixed length of 42 to strncpy when copying parsed mDNS data, causing a read beyond the end of a heap allocation. The public report demonstrates the fault only through the OSS-Fuzz packet-dissector harness, and production packet-path reachability is undisclosed.

CVSS severity6.2
Medium
EPSS probability0.29%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap buffer overflow in Flow::dissectMDNS in ntop ntopng 6.2 allows local users to crash the application via crafted mDNS data. The function passes a fixed length of 42 to strncpy when copying parsed mDNS data, causing a read beyond the end of a heap allocation. The public report demonstrates the fault only through the OSS-Fuzz packet-dissector harness, and production packet-path reachability is undisclosed.

The record

CVE
CVE-2024-53426
Published
Nov 21, 2024
Updated
Nov 26, 2024
Vendor
ntop
Product
ntopng
Classifications
CWE-120, T1499.004
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 21, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 26, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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  1. Affected versionversion=6.2

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

ntop · ntopngversion=6.2

Published CVSS scores

6.2CISA-ADPCVSS:3.1/AV:L/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
T1499.004Endpoint Denial of Service: Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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