Which versions of Ca300 Poe Firmware are affected by CVE-2025-6621?

Organizations using A vulnerability classified as critical should be aware of moderate risk from CVE-2025-6621, a command injection vulnerability rated CVSS 6.3.

Is there a public PoC exploit available for CVE-2025-6621?

Yes, a public proof-of-concept exploit is available for CVE-2025-6621. Prioritise patching immediately. EPSS: 2.5%.

How to fix or mitigate CVE-2025-6621?

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Validate input sanitization for user-controlled parameters.

Ca300 Poe Firmware CVE-2025-6621

Q: What is the CVSS score of CVE-2025-6621?

CVE-2025-6621 has a CVSS 4.0 base score of 2.1 (Low). CVSS vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X. EPSS exploitation probability: 2.5%.

EUVD-2025-19187 LOW

Command Injection (CWE-77)

2025-06-25 cna@vuldb.com

Command Injection Ca300 Poe Firmware

2.1

CVSS 4.0 · NVD

Severity by source

NVD PRIMARY

2.1 LOW

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Lifecycle Timeline

Severity Changed

Apr 29, 2026 - 01:11 NVD

MEDIUM LOW

CVSS changed

Apr 29, 2026 - 01:11 NVD

6.3 (MEDIUM) 2.1 (LOW)

EUVD ID Assigned

Mar 15, 2026 - 23:19 euvd

EUVD-2025-19187

Analysis Generated

Mar 15, 2026 - 23:19 vuln.today

PoC Detected

Jun 27, 2025 - 18:10 vuln.today

Public exploit code

CVE Published

Jun 25, 2025 - 18:15 cve.org

LOW 2.1

CVE Published

Jun 25, 2025 - 18:15 nvd

MEDIUM 6.3

DescriptionCVE.org

A vulnerability classified as critical has been found in TOTOLINK CA300-PoE 6.2c.884. This affects the function QuickSetting of the file ap.so. The manipulation of the argument hour/minute leads to os command injection. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used.

AnalysisAI

OS command injection in TOTOLINK CA300-PoE firmware 6.2c.884 allows remote attackers with low privileges to execute arbitrary commands on the device via the QuickSetting function. Exploit code is publicly available, increasing the risk of targeted attacks; no active exploitation has been confirmed by CISA KEV, though EPSS suggests moderate exploit probability (2.45%).