What is the CVSS score of CVE-2025-57063?

CVE-2025-57063 has a CVSS 3.1 base score of 7.5 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H. EPSS exploitation probability: 0.1%.

Which versions of G3 Firmware are affected by CVE-2025-57063?

Organizations using Tenda G3 v3.0br_V15.11.0.17 face notable risk from CVE-2025-57063, a stack-based buffer overflow vulnerability rated CVSS 7.5.

Is there a public PoC exploit available for CVE-2025-57063?

Yes, a public proof-of-concept exploit is available for CVE-2025-57063. Prioritise patching immediately. EPSS: 0.1%.

How to fix or mitigate CVE-2025-57063?

Within 30 days: Identify all affected systems and apply vendor patches as part of regular patch cycle. If patching is delayed, consider network segmentation to limit exposure.

G3 Firmware CVE-2025-57063

HIGH

Stack-based Buffer Overflow (CWE-121)

2025-09-09 cve@mitre.org

Tenda Denial Of Service Buffer Overflow Stack Overflow G3 Firmware

7.5

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

7.5 HIGH

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 28, 2026 - 19:11 vuln.today

PoC Detected

Sep 15, 2025 - 18:14 vuln.today

Public exploit code

CVE Published

Sep 09, 2025 - 17:16 nvd

HIGH 7.5

DescriptionCVE.org

Tenda G3 v3.0br_V15.11.0.17 was discovered to contain a stack overflow in the portMappingIndex parameter in the formDelPortMapping function. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted request.

AnalysisAI

Tenda G3 v3.0br_V15.11.0.17 was discovered to contain a stack overflow in the portMappingIndex parameter in the formDelPortMapping function. Rated high severity (CVSS 7.5), 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. Tenda G3 v3.0br_V15.11.0.17 was discovered to contain a stack overflow in the portMappingIndex parameter in the formDelPortMapping function. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted request. Affected products include: Tenda G3 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.