What is the CVSS score of CVE-2025-25663?

CVE-2025-25663 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 Ac8 Firmware are affected by CVE-2025-25663?

Organizations using Tenda AC8V4 face critical risk from CVE-2025-25663, a out-of-bounds write vulnerability rated CVSS 9.8.

Is there a public PoC exploit available for CVE-2025-25663?

Yes, a public proof-of-concept exploit is available for CVE-2025-25663. Prioritise patching immediately. EPSS: 0.2%.

How to fix or mitigate CVE-2025-25663?

Within 24 hours: Identify all affected systems running Tenda AC8V4 and apply vendor patches immediately. If patching is delayed, consider network segmentation to limit exposure.

Ac8 Firmware CVE-2025-25663

CRITICAL

Out-of-bounds Write (CWE-787)

2025-02-20 cve@mitre.org

Memory Corruption Tenda Buffer Overflow Ac8 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 - 18:27 vuln.today

PoC Detected

Mar 17, 2025 - 15:10 vuln.today

Public exploit code

CVE Published

Feb 20, 2025 - 23:15 nvd

CRITICAL 9.8

DescriptionCVE.org

A vulnerability was found in Tenda AC8V4 V16.03.34.06. Affected is the function SUB_0046AC38 of the file /goform/WifiExtraSet. The manipulation of the argument wpapsk_crypto leads to stack-based buffer overflow.

AnalysisAI

A vulnerability was found in Tenda AC8V4 V16.03.34.06. 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. A vulnerability was found in Tenda AC8V4 V16.03.34.06. Affected is the function SUB_0046AC38 of the file /goform/WifiExtraSet. The manipulation of the argument wpapsk_crypto leads to stack-based buffer overflow. Affected products include: Tenda Ac8 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).

CVE-2025-25663 vulnerability details – vuln.today

Back

Ac8 Firmware CVE-2025-25663

Severity by source

CVSS VectorNVD

Lifecycle Timeline

DescriptionCVE.org

AnalysisAI

Technical ContextAI

RemediationAI

Share

External POC / Exploit Code