What is CVE-2021-40007?

CVE-2021-40007 is a medium-severity vulnerability in Huawei Ecns280 Td, classified under Improper Encoding or Escaping of Output. CVSS score: 6.5/10. Published 2021-12-13.

How severe is CVE-2021-40007?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in Huawei Ecns280 Td

CVE-2021-40007

There is an information leak vulnerability in eCNS280_TD V100R005C10SPC650. The vulnerability is caused by improper log output management. An attacker with the ability to access the log file of device may lead to information disclosure.

Published 2021-12-13 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.005 (43.6th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 44th percentile — 43.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000

Affected products

Huawei Ecns280 Td
Huawei Ecns280 Td Firmware — versions v100r005c10spc650
Ecns280 Td — versions V100R005C10SPC650

Weakness classification (CWE)

CWE-116 — Improper Encoding or Escaping of Output

References

www.huawei.com/en/psirt/security-advisories/huawei-sa-20211208-01-informationle… (Vendor Advisory)

Frequently asked questions

What is CVE-2021-40007?: CVE-2021-40007 is a medium-severity vulnerability in Huawei Ecns280 Td, classified under Improper Encoding or Escaping of Output. CVSS score: 6.5/10. Published 2021-12-13.
How severe is CVE-2021-40007?: Medium severity. CVSS v3 base score is 6.5 out of 10.