Zyxel DSL CPE Devices: 2 exploited vulnerabilities (CVE-2024-40890, CVE-2024-40891)
Zyxel DSL CPE Devices
CVE-2024-40890: Multiple Zyxel DSL CPE devices contain a post-authentication command injection vulnerability in the CGI program that could allow an authenticated attacker to execute OS commands via a crafted HTTP request. CVE-2024-40891: 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. Added to CISA KEV on 2025-02-11.
Why this severity: CVSS 8.8 (CNA, v3.1); actively exploited (CISA KEV)
- Started
- Feb 11, 2025
- Closed
- Feb 11, 2025
Affected
- See vendor advisory / CISA notes (versions not always listed in KEV feed)
Fixed in
- None: CISA says the product is end-of-life; discontinue use
Timeline2
CISA added CVE-2024-40890 to the KEV catalog (due 2025-03-04).
CISA added CVE-2024-40891 to the KEV catalog (due 2025-03-04).
Advisories5
Notes & caveats
Derived from CISA KEV JSON feed catalogVersion 2026.10.21. CVSS from the CVE record (cvelistV5). Exact affected/fixed version strings are not always in the KEV record; verify against the vendor advisory URL. startedAt uses dateAdded (exploitation may have begun earlier; many entries are older CVEs newly confirmed as exploited in 2025).
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