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CVE-2024-40891

Published: Feb 4, 2025Updated: Oct 27, 2025 Sources: CVE List NVD BDUCWE-78
8.8HIGH
NVD MITRE
EPSS Score
21.8%
Top 2.6%
CISA KEV
Active Exploitation
Since Feb 11, 2025
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

Description

**UNSUPPORTED WHEN ASSIGNED** A post-authentication command injection vulnerability in the management commands 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 via Telnet.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-78

Affected Products

Zyxel Communications Corp.
commercial·TWaka Zyxel
VMG4325-B10A firmware
Networking Infrastructure
Zyxel CPE Series
Networking Infrastructure
vmg1312-b10a firmware
Networking Infrastructure
vmg1312-b10b firmware
Networking Infrastructure
vmg1312-b10e firmware
Networking Infrastructure
vmg3312-b10a firmware
Networking Infrastructure
vmg3313-b10a firmware
Networking Infrastructure
vmg3926-b10b firmware
Networking Infrastructure
and 8 more affected products View all →

Exploitability

CISA Known Exploited Vulnerability
Added to KEV:Feb 11, 2025
Remediation due:Mar 4, 2025

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.

Official Patch Available
Is your org exposed to CVE-2024-40891?We can run the check for you — a free external exposure review, no install. Check my exposure

Attack Graph

Products CVE Techniques Tactics

Click technique nodes for MITRE ATT&CK details · drag to pan · Ctrl/⌘ + scroll to zoom, or go fullscreen.

MITRE ATT&CK

1 technique
Execution
View detailed technique mapping

References

https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-command-injection-and-insecure-default-credentials-vulnerabilities-in-certain-legacy-dsl-cpe-02-04-2025
zyxel.com
https://www.bleepingcomputer.com/news/security/hackers-exploit-critical-unpatched-flaw-in-zyxel-cpe-devices/
bleepingcomputer.com
https://vulncheck.com/signin?redirect=/cve/CVE-2024-40891
vulncheck.com
and 4 more references View all →

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