What is the CVSS score of CVE-2023-51966?

CVE-2023-51966 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: 0.2%.

Which versions of Ax1803 Firmware are affected by CVE-2023-51966?

Organizations using Tenda AX1803 v1.0.0.1 face critical risk from CVE-2023-51966, a out-of-bounds write vulnerability rated CVSS 9.8.

Is there a public PoC exploit available for CVE-2023-51966?

Yes, a public proof-of-concept exploit is available for CVE-2023-51966. Prioritise patching immediately. EPSS: 0.2%.

How to fix or mitigate CVE-2023-51966?

Within 24 hours: Identify all affected systems and apply vendor patches immediately. If patching is delayed, consider network segmentation to limit exposure.

Ax1803 Firmware CVE-2023-51966

CRITICAL

Out-of-bounds Write (CWE-787)

2024-01-10 cve@mitre.org

Buffer Overflow Memory Corruption Tenda Ax1803 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 - 19:34 vuln.today

PoC Detected

Jun 20, 2025 - 16:15 vuln.today

Public exploit code

CVE Published

Jan 10, 2024 - 14:15 nvd

CRITICAL 9.8

DescriptionCVE.org

Tenda AX1803 v1.0.0.1 contains a stack overflow via the adv.iptv.stballvlans parameter in the function setIptvInfo.

AnalysisAI

Tenda AX1803 v1.0.0.1 contains a stack overflow via the adv.iptv.stballvlans parameter in the function setIptvInfo. Rated critical severity (CVSS 9.8), 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 Out-of-bounds Write (CWE-787), which allows attackers to write data beyond allocated buffer boundaries leading to code execution or crashes. Tenda AX1803 v1.0.0.1 contains a stack overflow via the adv.iptv.stballvlans parameter in the function setIptvInfo. Affected products include: Tenda Ax1803 Firmware.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Validate write boundaries, use memory-safe languages, enable compiler protections (ASLR, stack canaries).