CVE-2024-40891
Actively exploited. CVE-2024-40891 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2025-02-11) — exploitation has been observed in the wild, and US federal agencies are required to remediate it under BOD 22-01. Treat patching as urgent.
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.
CSIRTS triage
- What
- Multiple Zyxel DSL CPE devices have a post-authentication command injection vulnerability in management commands.
- Who is affected
- Authenticated users of the affected Zyxel DSL CPE devices.
- Urgency
- Remediation is urgent due to active exploitation and critical severity.
- Action
- Update the firmware of the affected Zyxel DSL CPE devices.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Exploitation confirmedAlready exploited in the wild (CISA KEV) — the prediction phase is over. Patch now. Riskier than 97% of all EPSS-scored CVEs.
Advisory coverage (1)
- criticalexploitedCVE-2024-40891: Zyxel DSL CPE OS Command Injection Vulnerabilitycisa-kev · 2025-02-11
External references
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