What is the CVSS score of CVE-2025-28028?

CVE-2025-28028 has a CVSS 3.1 base score of 7.3 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L. EPSS exploitation probability: 0.3%.

Which versions of A830R Firmware are affected by CVE-2025-28028?

Organizations using a buffer overflow vulnerability in downloadFile.cgi face moderate risk from CVE-2025-28028, a buffer overflow vulnerability rated CVSS 7.3.

Is there a public PoC exploit available for CVE-2025-28028?

Yes, a public proof-of-concept exploit is available for CVE-2025-28028. Prioritise patching immediately. EPSS: 0.3%.

How to fix or mitigate CVE-2025-28028?

Within 7 days: Identify all affected systems running a buffer overflow vulnerability in downloadFile.cgi and apply vendor patches promptly. If patching is delayed, consider network segmentation to limit exposure.

A830R Firmware CVE-2025-28028

HIGH

Classic Buffer Overflow (CWE-120)

2025-04-23 cve@mitre.org

Buffer Overflow A830R Firmware A950rg Firmware A3000Ru Firmware A3100R Firmware TOTOLINK

7.3

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

7.3 HIGH

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

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:L/I:L/A:L

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

Low

Lifecycle Timeline

Analysis Generated

Mar 28, 2026 - 18:38 vuln.today

PoC Detected

May 06, 2025 - 20:08 vuln.today

Public exploit code

CVE Published

Apr 23, 2025 - 17:16 nvd

HIGH 7.3

DescriptionCVE.org

AnalysisAI

TOTOLINK A830R V4.1.2cu.5182_B20201102, A950RG V4.1.2cu.5161_B20200903, A3000RU V5.9c.5185_B20201128, and A3100R V4.1.2cu.5247_B20211129 were found to contain a buffer overflow vulnerability in. Rated high severity (CVSS 7.3), 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 Buffer Copy without Size Check (CWE-120), which allows attackers to overflow a buffer to corrupt adjacent memory. TOTOLINK A830R V4.1.2cu.5182_B20201102, A950RG V4.1.2cu.5161_B20200903, A3000RU V5.9c.5185_B20201128, and A3100R V4.1.2cu.5247_B20211129 were found to contain a buffer overflow vulnerability in downloadFile.cgi through the v5 parameter. Affected products include: Totolink A830R Firmware, Totolink A950Rg Firmware, Totolink A3000Ru Firmware, Totolink A3100R Firmware.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Always validate buffer sizes before copy operations. Use bounded functions (strncpy, snprintf). Enable compiler protections.