What is CVE-2022-36587?

CVE-2022-36587 is a critical-severity vulnerability in Tenda G3, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 9.8/10. Published 2022-09-07.

How severe is CVE-2022-36587?

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

Buffer overflow in Tenda G3

CVE-2022-36587

In Tenda G3 US_G3V3.0br_V15.11.0.6(7663)_EN_TDE, there is a buffer overflow vulnerability caused by sprintf in function in the httpd binary.

Vulnerability class: Buffer Overflow

Published 2022-09-07 · 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: 0.009 (59.5th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 60th percentile — 59.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.009 · change: +0.001

Affected products

Tenda G3
Tenda G3 Firmware — versions 15.11.0.6(7663), 15.11.0.6\(7663\)

Weakness classification (CWE)

CWE-120 — Buffer Copy without Checking Size of Input (Classic Buffer Overflow)

References

www.tendacn.com/download/detail-3401.html (Patch, Vendor Advisory)
github.com/Davidteeri/Bug-Report/blob/main/tenda-G3- 0x53208.md (Third Party Advisory, Broken Link)

Frequently asked questions

What is CVE-2022-36587?: CVE-2022-36587 is a critical-severity vulnerability in Tenda G3, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 9.8/10. Published 2022-09-07.
How severe is CVE-2022-36587?: Critical severity. CVSS v3 base score is 9.8 out of 10.