What is CVE-2025-44877?

CVE-2025-44877 is a critical-severity vulnerability in Tenda Ac9, classified under Command Injection. CVSS score: 9.8/10. Published 2025-05-02.

How severe is CVE-2025-44877?

Critical severity. CVSS v3 base score is 9.8 out of 10.

RCE in Tenda Ac9

CVE-2025-44877

Tenda AC9 V15.03.06.42_multi was found to contain a command injection vulnerability in the formSetSambaConf function via the usbname parameter. This vulnerability allows attackers to execute arbitrary commands via a crafted request.

Vulnerability class: Command Injection (OS Command Injection)

Published 2025-05-02 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.019 (79.4th percentile), scored 2026-10-20.

Low probability of exploitation in the next 30 days, but still tracked. 79th percentile — 79.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.018 · newest: 0.019 · change: +0.001

Affected products

Tenda Ac9
Tenda Ac9 Firmware — versions 15.03.06.42_multi

Weakness classification (CWE)

CWE-77 — Command Injection

References

github.com/Summermu/VulnForIoT/tree/main/Tenda_AC/AC9_formSetSambaConf (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2025-44877?: CVE-2025-44877 is a critical-severity vulnerability in Tenda Ac9, classified under Command Injection. CVSS score: 9.8/10. Published 2025-05-02.
How severe is CVE-2025-44877?: Critical severity. CVSS v3 base score is 9.8 out of 10.