CVE-2024-11667A directory traversal vulnerability in the web management interface of Zyxel ATP series firmware versions V5.00 through V5.38, USG FLEX series firmware versions V5.00 through V5.38, USG FLEX 50(W) se…
Updated under an hour ago ()
Does this affect you?
It affects Zyxel ATP series firmware and 27 other products. Add what you run to find out whether that includes you.
CISA lists it as known exploited since Dec 3, 2024; federal agencies had to remediate by Dec 24, 2024, and it is known to be used in ransomware. Treat that date as your deadline.
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A directory traversal vulnerability in the web management interface of Zyxel ATP series firmware versions V5.00 through V5.38, USG FLEX series firmware versions V5.00 through V5.38, USG FLEX 50(W) series firmware versions V5.10 through V5.38, and USG20(W)-VPN series firmware versions V5.10 through V5.38 could allow an attacker to download or upload files via a crafted URL.
- CVSS
- 7.5 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- Weakness (CWE)
- CWE-22
- Known exploited
- Added to CISA KEV Dec 3, 2024; federal remediation due Dec 24, 2024; known ransomware useApply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
- EPSS (exploitation in the next 30 days)
- 2.93% (percentile 87)
- Assigned by
- Zyxel
- NVD analysis
- Analyzed
- Record last updated
- Aug 5, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Zyxel ATP series firmware zyxel:atp_series_firmware (from the name) | versions V5.00 through V5.38 | CNA record |
Zyxel USG FLEX series firmware zyxel:usg_flex_series_firmware (from the name) | versions V5.00 through V5.38 | CNA record |
Zyxel USG FLEX 50(W) series firmware zyxel:usg_flex_50_w_series_firmware (from the name) | versions V5.10 through V5.38 | CNA record |
Zyxel USG20(W)-VPN series firmware zyxel:usg20_w_vpn_series_firmware (from the name) | versions V5.10 through V5.38 | CNA record |
zyxel usg_flex_firmware zyxel:usg_flex_100h_firmware | from 5.00 through 5.38 | CISA ADP |
zyxel usg_flex_firmware zyxel:usg_flex_100hp_firmware | from 5.00 through 5.38 | CISA ADP |
zyxel usg_flex_firmware zyxel:usg_flex_100w_firmware | from 5.00 through 5.38 | CISA ADP |
zyxel usg_flex_firmware zyxel:usg_flex_200_firmware | from 5.00 through 5.38 | CISA ADP |
zyxel usg_flex_firmware zyxel:usg_flex_200h_firmware | from 5.00 through 5.38 | CISA ADP |
zyxel usg_flex_firmware zyxel:usg_flex_200hp_firmware | from 5.00 through 5.38 | CISA ADP |
zyxel usg_flex_firmware zyxel:usg_flex_500_firmware | from 5.00 through 5.38 | CISA ADP |
zyxel usg_flex_firmware zyxel:usg_flex_500h_firmware | from 5.00 through 5.38 | CISA ADP |
zyxel usg_flex_firmware zyxel:usg_flex_500w_firmware | from 5.00 through 5.38 | CISA ADP |
zyxel usg_flex_firmware zyxel:usg_flex_50ax_firmware | from 5.00 through 5.38 | CISA ADP |
zyxel usg_flex_firmware zyxel:usg_flex_50_firmware | from 5.00 through 5.38 | CISA ADP |
zyxel usg_flex_firmware zyxel:usg_flex_60ax_firmware | from 5.00 through 5.38 | CISA ADP |
zyxel usg_flex_firmware zyxel:usg_flex_700_firmware | from 5.00 through 5.38 | CISA ADP |
zyxel usg_flex_firmware zyxel:usg_flex_700h_firmware | from 5.00 through 5.38 | CISA ADP |
zyxel usg_flex_firmware zyxel:usg_flex_firmware | from 5.00 through 5.38 | CISA ADP |
zyxel atp_firmware zyxel:atp100_firmware | from 5.00 through 5.38 | CISA ADP |
zyxel atp_firmware zyxel:atp100w_firmware | from 5.00 through 5.38 | CISA ADP |
zyxel atp_firmware zyxel:atp500_firmware | from 5.00 through 5.38 | CISA ADP |
zyxel atp_firmware zyxel:atp700_firmware | from 5.00 through 5.38 | CISA ADP |
zyxel atp_firmware zyxel:atp800_firmware | from 5.00 through 5.38 | CISA ADP |
zyxel atp_firmware zyxel:atp_firmware | from 5.00 through 5.38 | CISA ADP |
zyxel usg20-vpn_firmware zyxel:usg20-vpn_firmware | from 5.10 through 5.38 | CISA ADP |
zyxel usg_flex_50w_firmware zyxel:usg_flex_50w_firmware | from 5.10 before 5.38 | CISA ADP |
zyxel zld zyxel:zld | from 5.00 through 5.38; from 5.00 through 5.38; from 5.10 through 5.38; from 5.10 through 5.38 | NVD |
References
- https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-protecting-against-recent-firewall-threats-11-27-2024vendor-advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-11667us-government-resource
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.