CVE-2024-5412Network attack vector

Unauthenticated device crash via crafted HTTP request

Published Sep 3, 2024 · Updated Sep 3, 2024

Buffer overflow in libclinkc in Zyxel VMG8825-T50K firmware 5.50(ABOM.8)C0 allows remote attackers to crash the device via HTTP. Zyxel has not disclosed the libclinkc routine, HTTP field, or unchecked memory operation that overruns the buffer. No authentication or user interaction is required; a crafted request interrupts gateway service, with no reported data disclosure or modification.

CVSS severity7.5
High
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

Buffer overflow in libclinkc in Zyxel VMG8825-T50K firmware 5.50(ABOM.8)C0 allows remote attackers to crash the device via HTTP. Zyxel has not disclosed the libclinkc routine, HTTP field, or unchecked memory operation that overruns the buffer. No authentication or user interaction is required; a crafted request interrupts gateway service, with no reported data disclosure or modification.

The record

CVE
CVE-2024-5412
Published
Sep 3, 2024
Updated
Sep 3, 2024
Vendor
Zyxel Networks
Product
VMG8825-T50K Firmware
Classifications
CWE-120, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 3, 2024CVE publishedPublication date reported by the CVE source.
  2. Sep 3, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=5.50\(abom.8\)c0
  2. Affected versionversion=5.50(ABOM.8)C0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Zyxel Networks · VMG8825-T50K Firmwareversion=5.50\(abom.8\)c0; version=5.50(ABOM.8)C0

Published CVSS scores

7.5Zyxel CorporationCVSS: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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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 exploitUnconfirmed

Weakness, pattern, technique

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

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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