CVE-2024-41334Network attack vector

Arbitrary code execution via unverified APP updates

Published Feb 27, 2025 · Updated Jul 8, 2026

Improper certificate validation in DrayTek Vigor router firmware allows attackers to execute arbitrary code through APP Enforcement updates. The APP Enforcement updater accepts downloads from nonofficial servers without validating their TLS certificates, then installs supplied APPE signatures as kernel modules. Exploitation requires control or interception of the signature-update connection; successful delivery runs attacker-controlled code in the router kernel.

CVSS severity8.8
High
EPSS probability0.38%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper certificate validation in DrayTek Vigor router firmware allows attackers to execute arbitrary code through APP Enforcement updates. The APP Enforcement updater accepts downloads from nonofficial servers without validating their TLS certificates, then installs supplied APPE signatures as kernel modules. Exploitation requires control or interception of the signature-update connection; successful delivery runs attacker-controlled code in the router kernel.

The record

CVE
CVE-2024-41334
Published
Feb 27, 2025
Updated
Jul 8, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-295, T1557
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 27, 2025CVE publishedPublication date reported by the CVE source.
  2. Jul 8, 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 privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

8.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
9.8GitHub Advisory DatabaseCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-295Improper Certificate Validation
T1557Adversary-in-the-Middle

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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