What is the CVSS score of CVE-2025-45491?

CVE-2025-45491 has a CVSS 3.1 base score of 9.8 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 11.9%.

Which versions of E5600 Firmware are affected by CVE-2025-45491?

Organizations using Linksys E5600 v1.1.0.26 face critical risk from CVE-2025-45491, a command injection vulnerability rated CVSS 9.8.

Is there a public PoC exploit available for CVE-2025-45491?

Yes, a public proof-of-concept exploit is available for CVE-2025-45491. Prioritise patching immediately. EPSS: 11.9%.

How to fix or mitigate CVE-2025-45491?

Within 24 hours: Identify all affected systems and apply vendor patches immediately. Validate that input sanitization is in place for all user-controlled parameters.

E5600 Firmware CVE-2025-45491

CRITICAL

Command Injection (CWE-77)

2025-05-06 cve@mitre.org

Command Injection Linksys E5600 Firmware

9.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

9.8 CRITICAL

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 28, 2026 - 18:40 vuln.today

PoC Detected

May 13, 2025 - 20:19 vuln.today

Public exploit code

CVE Published

May 06, 2025 - 16:15 nvd

CRITICAL 9.8

DescriptionCVE.org

Linksys E5600 v1.1.0.26 was discovered to contain a command injection vulnerability in the runtime.ddnsStatus DynDNS function via the username parameter.

AnalysisAI

Linksys E5600 v1.1.0.26 was discovered to contain a command injection vulnerability in the runtime.ddnsStatus DynDNS function via the username parameter. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and EPSS exploitation probability 11.9%.

Technical ContextAI

This vulnerability is classified as Command Injection (CWE-77), which allows attackers to inject arbitrary commands into system command execution. Linksys E5600 v1.1.0.26 was discovered to contain a command injection vulnerability in the runtime.ddnsStatus DynDNS function via the username parameter. Affected products include: Linksys E5600 Firmware.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Use parameterized APIs, avoid shell execution, validate input with strict allowlists.