What is the CVSS score of CVE-2025-28033?

CVE-2025-28033 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 A800R Firmware are affected by CVE-2025-28033?

CVE-2025-28033 presents moderate security risk, a stack-based buffer overflow vulnerability rated CVSS 7.3.

Is there a public PoC exploit available for CVE-2025-28033?

Yes, a public proof-of-concept exploit is available for CVE-2025-28033. Prioritise patching immediately. EPSS: 0.3%.

How to fix or mitigate CVE-2025-28033?

Within 7 days: Identify all affected systems and apply vendor patches promptly. If patching is delayed, consider network segmentation to limit exposure.

A800R Firmware CVE-2025-28033

HIGH

Stack-based Buffer Overflow (CWE-121)

2025-04-22 cve@mitre.org

Buffer Overflow Stack Overflow A800R Firmware A810R Firmware 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

Apr 29, 2025 - 16:19 vuln.today

Public exploit code

CVE Published

Apr 22, 2025 - 14:15 nvd

HIGH 7.3

DescriptionCVE.org

TOTOLINK A800R V4.1.2cu.5137_B20200730, A810R V4.1.2cu.5182_B20201026, 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 pre-auth buffer overflow vulnerability in the setNoticeCfg function through the IpTo parameter.

AnalysisAI

TOTOLINK A800R V4.1.2cu.5137_B20200730, A810R V4.1.2cu.5182_B20201026, A830R V4.1.2cu.5182_B20201102, A950RG V4.1.2cu.5161_B20200903, A3000RU V5.9c.5185_B20201128, and A3100R V4.1.2cu.5247_B20211129. 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 under CWE-121. TOTOLINK A800R V4.1.2cu.5137_B20200730, A810R V4.1.2cu.5182_B20201026, 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 pre-auth buffer overflow vulnerability in the setNoticeCfg function through the IpTo parameter. Affected products include: Totolink A800R Firmware, Totolink A810R Firmware, Totolink A830R Firmware, Totolink A950Rg Firmware, Totolink A3000Ru Firmware.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.