CVE-2024-40890

HIGH8.8

CISA KEV

Published 2025-02-04 · Updated 2026-06-17 · Source security@zyxel.com.tw

Summary

CVE-2024-40890 is a high-severity (CVSS 8.8) vulnerability in Zyxel DSL CPE Devices. CISA added it to the Known Exploited Vulnerabilities catalog on February 11, 2025, which means exploitation in the wild has been confirmed; US federal agencies had to remediate it by March 4, 2025. CISA does not currently list it as used in ransomware campaigns. Zyxel has 13 vulnerabilities in the KEV catalog, 2 of them linked to ransomware.

All 13 known-exploited Zyxel vulnerabilities →

Description

**UNSUPPORTED WHEN ASSIGNED** A post-authentication command injection vulnerability in the CGI program of the legacy DSL CPE Zyxel VMG4325-B10A firmware version 1.00(AAFR.4)C0_20170615 could allow an authenticated attacker to execute operating system (OS) commands on an affected device by sending a crafted HTTP POST request.

CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE-78

CISA Known-Exploited Vulnerability

Product: Zyxel — DSL CPE Devices

Name: Zyxel DSL CPE OS Command Injection Vulnerability

Date added: 2025-02-11 · Due: 2025-03-04

Required action: The impacted product could be end-of-life (EoL) and/or end-of-service (EoS). Users should discontinue product utilization if a current mitigation is unavailable.

References

View on NVD

More exploited Zyxel vulnerabilities

Most recently added to CISA KEV

CVE-2026-7273
GS1900 Series Switches — Zyxel GS1900 Series Switches Stack-Based Buffer Overflow Vulnerability
added 2026-09-21
CVE-2024-40891
DSL CPE Devices — Zyxel DSL CPE OS Command Injection Vulnerability
added 2025-02-11
CVE-2024-11667
RANSOMWARE
Multiple Firewalls — Zyxel Multiple Firewalls Path Traversal Vulnerability
added 2024-12-03
CVE-2017-6884
RANSOMWARE
EMG2926 Routers — Zyxel EMG2926 Routers Command Injection Vulnerability
added 2023-09-18
CVE-2017-18368
P660HN-T1A Routers — Zyxel P660HN-T1A Routers Command Injection Vulnerability
added 2023-08-07
CVE-2023-27992
Multiple Network-Attached Storage (NAS) Devices — Zyxel Multiple NAS Devices Command Injection Vulnerability
added 2023-06-23

View all →

Related CVEs

Same severity, most recent

CVE-2026-65960
Tetragon is an eBPF-based security observability and runtime enforcement project. Versions before 1.7.0 can use a Helm default that exposes the privileged Tetragon gRPC API through an unauthenticated TCP listener on localhost:54321. An attacker who can run or compromise same-node hostNetwork pods can reach the listener and invoke privileged methods without authentication. These methods can add, delete, or reconfigure tracing policies and change debug settings, potentially resulting in privilege escalation or container escape. Version 1.7.0 changes the default endpoint to a Unix-domain socket. Deployments that do not expose an unauthenticated TCP listener are not affected.
2026-11-06 · score 8.8
CVE-2026-33050
GeoNode is a geospatial content management system, a platform for the management and publication of geospatial data. Prior to 5.1.0, a crafted vector file layer name supplied during upload allows a low-privileged remote user to inject shell syntax and execute arbitrary operating-system commands on the GeoNode server. This issue is fixed in version 5.1.0.
2026-11-06 · score 8.8
CVE-2026-124040
CivetWeb through 1.16, when built with USE_HTTP2 and enable_http2 on, contains a use-after-free vulnerability in handle_http2() that retains freed :method and :path pointers. Unauthenticated remote attackers can send a later HEADERS frame omitting these pseudo-headers to influence request method or path seen by access rules, or crash the server.
2026-11-06 · score 8.1
CVE-2026-124027
ChatWiki before 2.10.0 contains a missing authentication vulnerability in the GET /manage/getLibRawFileOnePage route that allows unauthenticated attackers to read other tenants' documents. Attackers can enumerate sequential admin_user_id and file id query parameters, bypassing the ownership check, to retrieve PDF-rendered pages of any tenant's knowledge-base documents.
2026-11-06 · score 7.5
CVE-2026-123974
In all versions of PyTorch's TorchServe, a predictable extraction directory in /tmp lets a local user swap the model handler and run code as the TorchServe service account leading to local privilege escalation.
2026-11-06 · score 7.8