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HomeCVEsCVE-2024-40891

CVE-2024-40891

Published: January 26, 2026
Last updated:9 hours ago (January 26, 2026)
Exploit: YesZero-day: YesPatch: YesTrend: Neutral
TL;DR
Updated January 26, 2026

CVE-2024-40891 is a high severity vulnerability with a CVSS score of 8.8. Exploits are available; patches have been released and should be applied urgently. This is classified as a zero-day vulnerability.

Key Points
  • 1High severity (CVSS 8.8/10)
  • 2EPSS: 39.00% - high likelihood of exploitation
  • 3Public exploits are available
  • 4Vendor patches are available
  • 5Strobes Priority Score: 999/1000 (Critical)
  • 6Affects products from: Zyxel
Severity Scores
CVSS v38.8
CVSS v20.0
Priority Score999.0
EPSS Score39.0
High
Exploitation LikelihoodHigh
39.00%EPSS

High probability of exploitation in the next 30 days

Prioritize patching within days
39.00%
EPSS
8.8
CVSS
Yes
Exploit
Yes
Patch
Critical Priority
high EPSS • exploit exists • high priority

EPSS predicts the probability of exploitation in the next 30 days based on real-world threat data, complementing CVSS severity scores with actual risk assessment.

Description

Multiple Zyxel DSL CPE devices contain a post-authentication command injection vulnerability in the management commands that could allow an authenticated attacker to execute OS commands via Telnet.

CVSS v3 Breakdown
Attack Vector:Network
Attack Complexity:Local
Privileges Required:Local
User Interaction:Network
Scope:Unchanged
Confidentiality:High
Integrity:High
Availability:High
Exploit References
Cisa.gov
Patch References
[email protected]Zeroday CZ
Trend Analysis
Neutral
Vulnerable Products
VendorProduct
ZyxelVmg1312 B10b Firmware
ZyxelVmg4380 B10a
ZyxelVmg4380 B10a Firmware
ZyxelVmg8924 B10a
ZyxelVmg8924 B10a Firmware
ZyxelSbg3300 Nb00 Firmware
ZyxelSbg3500 N000 Firmware
ZyxelVmg1312 B10a
ZyxelVmg3312 B10a
ZyxelSbg3300 N000 Firmware

And 17 more...

Advisories
CISA: Multiple Zyxel DSL CPE devices contain a post-authentication command injection vulnerability in the management commands that could allow an authenticated attacker to execute OS commands via Telnet.
GitHub AdvisoryNVD
Cite This Page
APA Format
Strobes VI. (2026). CVE-2024-40891 - CVE Details and Analysis. Strobes VI. Retrieved January 26, 2026, from https://vi.strobes.co/cve/CVE-2024-40891
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