CVE-2024-41584Network attack vector

Browser script execution via unvalidated sFormAuthStr

Published Oct 3, 2024 · Updated Oct 3, 2024

Reflected XSS in DrayTek Vigor3910 firmware through 4.3.2.6 allows remote authenticated users to execute script via sFormAuthStr. The wlogin.cgi WebUI page reflects the anti-CSRF query parameter into its output without filtering attacker-controlled content. Exploitation requires an authenticated context and a legitimate user to open a crafted link, allowing modification of data in that browser context.

CVSS severity4.7
Medium
EPSS probability0.30%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reflected XSS in DrayTek Vigor3910 firmware through 4.3.2.6 allows remote authenticated users to execute script via sFormAuthStr. The wlogin.cgi WebUI page reflects the anti-CSRF query parameter into its output without filtering attacker-controlled content. Exploitation requires an authenticated context and a legitimate user to open a crafted link, allowing modification of data in that browser context.

The record

CVE
CVE-2024-41584
Published
Oct 3, 2024
Updated
Oct 3, 2024
Vendor
DrayTek
Product
Vigor3910
Classifications
CWE-79, T1203
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 3, 2024CVE publishedPublication date reported by the CVE source.
  2. Oct 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=0 <=4.3.2.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

DrayTek · Vigor3910version=0 <=4.3.2.6

Published CVSS scores

4.7CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

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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