HIGH

CVE-2025-5839

Tenda AC9 POST Request AdvSetLanip fromadvsetlanip buffer overflow

CVSS v3

8.8

HIGH

EPSS Score

1.0 %

exploit probability, as of 2026-10-11

CISA KEV

known exploited

Exploitation

poc

SSVC status

Affected and fixed versions

Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2025-5839 yet.

Full record on NVD

Description

A vulnerability, which was classified as critical, has been found in Tenda AC9 15.03.02.13. Affected by this issue is the function fromadvsetlanip of the file /goform/AdvSetLanip of the component POST Request Handler. The manipulation of the argument lanMask leads to buffer overflow. The attack may be launched remotely. The exploit has been disclosed to the public and may be used.

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published: 2025-06-07
Last Modified: 2025-06-09

Frequently asked questions

What is CVE-2025-5839?

Is CVE-2025-5839 actively exploited?

A proof-of-concept exploit exists for CVE-2025-5839, but active exploitation has not been confirmed at this time.

What is the CVSS score for CVE-2025-5839?

CVE-2025-5839 has a CVSS v3 base score of 8.8 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

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