What is CVE-2023-31587?

CVE-2023-31587 is a critical-severity vulnerability in Tenda Ac5. CVSS score: 9.8/10. Published 2023-05-16.

How severe is CVE-2023-31587?

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

Vulnerability in Tenda Ac5

CVE-2023-31587

Tenda AC5 router V15.03.06.28 was discovered to contain a remote code execution (RCE) vulnerability via the Mac parameter at ip/goform/WriteFacMac.

Published 2023-05-16 · 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: 0.020 (80.4th percentile), scored 2026-10-20.

Low probability of exploitation in the next 30 days, but still tracked. 80th percentile — 80.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.020 · newest: 0.020 · change: 0.000

Affected products

Tenda Ac5
Tenda Ac5 Firmware — versions 15.03.06.28

References

www.tenda.com.cn/product/AC5.html (Patch)
www.tenda.com.cn/download/detail-2740.html (Product)
github.com/yanbushuang/CVE/blob/main/TendaAC5.md (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2023-31587?: CVE-2023-31587 is a critical-severity vulnerability in Tenda Ac5. CVSS score: 9.8/10. Published 2023-05-16.
How severe is CVE-2023-31587?: Critical severity. CVSS v3 base score is 9.8 out of 10.