What is CVE-2023-27042?

CVE-2023-27042 is a high-severity vulnerability in Tenda Ax3, classified under Out-of-bounds Write. CVSS score: 8.8/10. Published 2023-03-24.

How severe is CVE-2023-27042?

High severity. CVSS v3 base score is 8.8 out of 10.

Buffer overflow in Tenda Ax3

CVE-2023-27042

Tenda AX3 V16.03.12.11 is vulnerable to Buffer Overflow via /goform/SetFirewallCfg.

Vulnerability class: Buffer Overflow

Published 2023-03-24 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.009 (58.1th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 58th percentile — 58.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000

Affected products

Tenda Ax3
Tenda Ax3 Firmware — versions 16.03.12.11

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

github.com/hujianjie123/vuln/blob/main/Tenda/SetFirewallCfg/readme.md (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2023-27042?: CVE-2023-27042 is a high-severity vulnerability in Tenda Ax3, classified under Out-of-bounds Write. CVSS score: 8.8/10. Published 2023-03-24.
How severe is CVE-2023-27042?: High severity. CVSS v3 base score is 8.8 out of 10.