CVE-2024-46558Network attack vector

Service interruption via unchecked newProname copy

Published Sep 18, 2024 · Updated Mar 18, 2025

Buffer overflow in v2x00.cgi in Draytek Vigor 3910 4.3.2.6 allows remote attackers to interrupt service via crafted newProname input. The CGI handler copies the attacker-controlled newProname parameter without checking its length, overrunning a destination buffer. No authentication or user interaction is required; the documented consequence is denial of service, with no published evidence of data disclosure, modification, or code execution.

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

Buffer overflow in v2x00.cgi in Draytek Vigor 3910 4.3.2.6 allows remote attackers to interrupt service via crafted newProname input. The CGI handler copies the attacker-controlled newProname parameter without checking its length, overrunning a destination buffer. No authentication or user interaction is required; the documented consequence is denial of service, with no published evidence of data disclosure, modification, or code execution.

The record

CVE
CVE-2024-46558
Published
Sep 18, 2024
Updated
Mar 18, 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 18, 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

7.5NVDCVSS: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 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')
T1499.004Endpoint Denial of Service: Application 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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