CVE-2024-41338Network attack vector

Service interruption via crafted DHCP request

Published Feb 27, 2025 · Updated Jul 5, 2026

NULL pointer dereference in the DHCP server of affected DrayTek Vigor firmware allows remote attackers to interrupt router service. A crafted DHCP request reaches an undisclosed server path that dereferences a NULL pointer instead of rejecting the malformed request. Unauthenticated network access to the DHCP service is sufficient, and the resulting fault disrupts availability without reported data disclosure or modification.

CVSS severity7.5
High
EPSS probability0.44%
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 the DHCP server of affected DrayTek Vigor firmware allows remote attackers to interrupt router service. A crafted DHCP request reaches an undisclosed server path that dereferences a NULL pointer instead of rejecting the malformed request. Unauthenticated network access to the DHCP service is sufficient, and the resulting fault disrupts availability without reported data disclosure or modification.

The record

CVE
CVE-2024-41338
Published
Feb 27, 2025
Updated
Jul 5, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-476, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 27, 2025CVE publishedPublication date reported by the CVE source.
  2. Jul 5, 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

7.5NVDCVSS: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 exploitUnconfirmed

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
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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