Which versions of A720R Firmware are affected by CVE-2025-4268?

Organizations using A vulnerability should be aware of notable risk from CVE-2025-4268, a improper authentication vulnerability rated CVSS 6.9.

Is there a public PoC exploit available for CVE-2025-4268?

Yes, a public proof-of-concept exploit is available for CVE-2025-4268. Prioritise patching immediately. EPSS: 0.2%.

How to fix or mitigate CVE-2025-4268?

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Audit authentication configurations.

A720R Firmware CVE-2025-4268

Q: What is the CVSS score of CVE-2025-4268?

CVE-2025-4268 has a CVSS 4.0 base score of 6.9 (Medium). CVSS vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/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: 0.2%.

MEDIUM

Improper Authentication (CWE-287)

2025-05-05 cna@vuldb.com

Authentication Bypass A720R Firmware TOTOLINK

6.9

CVSS 4.0 · NVD

Severity by source

NVD PRIMARY

6.9 MEDIUM

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/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:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/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

None

User Interaction

None

Scope

Lifecycle Timeline

Analysis Generated

Mar 28, 2026 - 18:40 vuln.today

PoC Detected

May 07, 2025 - 16:38 vuln.today

Public exploit code

CVE Published

May 05, 2025 - 07:15 nvd

MEDIUM 6.9

DescriptionCVE.org

A vulnerability has been found in TOTOLINK A720R 4.1.5cu.374 and classified as critical. This vulnerability affects unknown code of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument topicurl with the input RebootSystem leads to missing authentication. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used.

AnalysisAI

A vulnerability has been found in TOTOLINK A720R 4.1.5cu.374 and classified as critical. Rated medium severity (CVSS 6.9), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified as Improper Authentication (CWE-287), which allows attackers to bypass authentication mechanisms to gain unauthorized access. A vulnerability has been found in TOTOLINK A720R 4.1.5cu.374 and classified as critical. This vulnerability affects unknown code of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument topicurl with the input RebootSystem leads to missing authentication. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used. Affected products include: Totolink A720R Firmware.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Implement multi-factor authentication, enforce strong password policies, use proven authentication frameworks.