CVE-2025-45491
Published: 06 May 2025
Summary
CVE-2025-45491 is a critical-severity Command Injection (CWE-77) vulnerability in Linksys E5600 Firmware. Its CVSS base score is 9.8 (Critical).
Operationally, ranked in the top 5.7% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Deeper analysis
Linksys E5600 firmware version 1.1.0.26 contains a command injection vulnerability in the runtime.ddnsStatus DynDNS function that is triggered through the username parameter. The issue is tracked under CWE-77 and CWE-78 and carries a CVSS 3.1 score of 9.8, reflecting network-accessible unauthenticated exploitation with full impact on confidentiality, integrity, and availability.
An attacker can supply a crafted username value to the affected DynDNS endpoint and achieve arbitrary command execution on the device without requiring authentication or user interaction. Successful exploitation grants complete control over the router, enabling actions such as configuration changes, traffic interception, or persistence mechanisms.
Public references consist of a technical report and accompanying Python proof-of-concept script that demonstrate the injection, but no vendor advisory, firmware update, or mitigation guidance is referenced. The associated EPSS score of 0.1330 indicates a moderate and stable exploitation probability since disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-13618
Vulnerability details
Linksys E5600 v1.1.0.26 was discovered to contain a command injection vulnerability in the runtime.ddnsStatus DynDNS function via the username parameter.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.