What is the CVSS score of CVE-2025-57638?

CVE-2025-57638 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 Ac9 Firmware are affected by CVE-2025-57638?

CVE-2025-57638 presents notable security risk, a heap-based buffer overflow vulnerability rated CVSS 7.5.

Is there a public PoC exploit available for CVE-2025-57638?

Yes, a public proof-of-concept exploit is available for CVE-2025-57638. Prioritise patching immediately. EPSS: 0.1%.

How to fix or mitigate CVE-2025-57638?

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

Ac9 Firmware CVE-2025-57638

HIGH

Heap-based Buffer Overflow (CWE-122)

2025-09-23 cve@mitre.org

Heap Overflow Buffer Overflow Tenda Ac9 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 - 19:13 vuln.today

PoC Detected

Sep 25, 2025 - 16:09 vuln.today

Public exploit code

CVE Published

Sep 23, 2025 - 19:15 nvd

HIGH 7.5

DescriptionCVE.org

Buffer overflow vulnerability in Tenda AC9 1.0 via the user supplied sys.vendor configuration value.

AnalysisAI

Buffer overflow vulnerability in Tenda AC9 1.0 via the user supplied sys.vendor configuration value. 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-122. Buffer overflow vulnerability in Tenda AC9 1.0 via the user supplied sys.vendor configuration value. Affected products include: Tenda Ac9 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.