CVE-2024-42061

mediumpriority · track · 0EPSS 0.003 · 24 %ileDEEUNLRUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.31% (24th) EPSS

CVSS 6.1 · medium

Is it mine?

17 products

Check your exposure

Who says so?

6 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

A reflected cross-site scripting (XSS) vulnerability in the CGI program "dynamic_script.cgi" of Zyxel ATP series firmware versions from V4.32 through V5.38, USG FLEX series firmware versions from V4.50 through V5.38, USG FLEX 50(W) series firmware versions from V4.16 through V5.38, and USG20(W)-VPN series firmware versions from V4.16 through V5.38 could allow an attacker to trick a user into visiting a crafted URL with the XSS payload. The attacker could obtain browser-based information if the malicious script is executed on the victim’s browser.

cvss

Technical severity, 0–10. One row per scoring source.

6.1

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.16.1mediumAV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:Nsecondary · FSTEC (BDU) RU

v3.16.1mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:Nsecondary · ENISA EU

v3.16.1mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:Nsecondary · security@zyxel.com.twexploitability 2.8 · impact 2.7

v3.15.6mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:Usecondary · CVSS-BT (t0sche)

v3.16.1mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:Nsecondary · NCSC-NL NL

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-79USCWE-79USCWE-79US

affected products (17)

Products and version ranges known to be affected.

Zyxel Firewall <5.39all versionscert_bundDE
Zyxel Firewall< 5.39cert_bundDE
Zyxel ATP series firmware≤ versions V4.32 through V5.38enisa_euvdEU
Zyxel USG FLEX 50(W) series firmware≤ versions V4.16 through V5.38enisa_euvdEU
Zyxel USG FLEX series firmware≤ versions V4.50 through V5.38enisa_euvdEU
Zyxel USG20(W)-VPN series firmware≤ versions V4.16 through V5.38enisa_euvdEU
Zyxel Communications Corp. ATP4.32 → 5.39fstec_bduRU
Zyxel Communications Corp. USG FLEX4.50 → 5.39fstec_bduRU
Zyxel Communications Corp. USG FLEX 20(W)4.16 → 5.39fstec_bduRU
Zyxel Communications Corp. USG USG20(W)-VPN4.16 → 5.39fstec_bduRU
atp_series_firmwareall versionsncsc_nlNLcpe:2.3:a:zyxel:atp_series_firmware:versions_v4.32_through_v5.38:*:*:*:*:*:*:*
usg20_w_-vpn_series_firmwareall versionsncsc_nlNLcpe:2.3:a:zyxel:usg20_w_-vpn_series_firmware:versions_v4.16_through_v5.38:*:*:*:*:*:*:*
usg_flex_50_w__series_firmwareall versionsncsc_nlNLcpe:2.3:a:zyxel:usg_flex_50_w__series_firmware:versions_v4.16_through_v5.38:*:*:*:*:*:*:*
usg_flex_series_firmwareall versionsncsc_nlNLcpe:2.3:a:zyxel:usg_flex_series_firmware:versions_v4.50_through_v5.38:*:*:*:*:*:*:*
zyxel zld4.16 → 5.39nvdUScpe:2.3:o:zyxel:zld:*:*:*:*:*:*:*:*
zyxel zld4.32 → 5.39nvdUScpe:2.3:o:zyxel:zld:*:*:*:*:*:*:*:*
zyxel zld4.50 → 5.39nvdUScpe:2.3:o:zyxel:zld:*:*:*:*:*:*:*:*

advisories (2)

Vendor and ecosystem advisories describing this.

NCSC-2024-0357Kwetsbaarheden verholpen in Zyxel Flex en USG FirewallsNL2024-09-03csaf · ncsc_nlNL
Zyxel heeft kwetsbaarheden verholpen in de firmware van ATP en USG Flex firewalls.
WID-SEC-W-2024-2031Zyxel Firewall: Mehrere SchwachstellenDeutsch2024-09-02csaf · cert_bundDE
Ein entfernter Angreifer kann mehrere Schwachstellen in der Zyxel Firewall ausnutzen, um beliebigen Code auszuführen, einen Denial-of-Service-Zustand zu erzeugen oder Cross-Stie Scripting-Angriffe durchzuführen.

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cert_bund ncsc_nl nvd NVD CVE.org MITRE

published 2024-09-03modified 2026-06-17

references (4)

External citations — patches, advisories, analysis.

scry

Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.

Free scan