CVE-2024-46561Network attack vector

Remote service interruption via queryret buffer overflow

Published Sep 18, 2024 · Updated Mar 19, 2025

A buffer overflow in DrayTek Vigor3910 firmware 4.3.2.6 allows remote attackers to interrupt router service via crafted queryret input. The v2x00.cgi handler processes the attacker-controlled queryret parameter without enforcing the destination buffer boundary, causing memory corruption. Unauthenticated network access to the affected CGI endpoint is sufficient, and the documented consequence is service interruption rather than data disclosure or modification.

CVSS severity7.5
High
EPSS probability0.52%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A buffer overflow in DrayTek Vigor3910 firmware 4.3.2.6 allows remote attackers to interrupt router service via crafted queryret input. The v2x00.cgi handler processes the attacker-controlled queryret parameter without enforcing the destination buffer boundary, causing memory corruption. Unauthenticated network access to the affected CGI endpoint is sufficient, and the documented consequence is service interruption rather than data disclosure or modification.

The record

CVE
CVE-2024-46561
Published
Sep 18, 2024
Updated
Mar 19, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-120, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 18, 2024CVE publishedPublication date reported by the CVE source.
  2. Mar 19, 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.

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

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-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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