What is CVE-2018-7921?

CVE-2018-7921 is a medium-severity vulnerability in Huawei B315s-22, classified under Information Disclosure. CVSS score: 6.5/10. Published 2018-09-12.

How severe is CVE-2018-7921?

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

Information disclosure in Huawei B315s-22

CVE-2018-7921

Huawei B315s-22 products with software of 21.318.01.00.26 have an information leak vulnerability. Unauthenticated adjacent attackers may exploit this vulnerability to obtain device information.

Vulnerability class: Information Disclosure

Published 2018-09-12 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.132 (96.3th percentile), scored 2026-09-30.

Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 96th percentile — 96.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.132 · newest: 0.132 · change: 0.000

Affected products

Huawei B315s-22
Huawei B315s-22 Firmware — versions 21.318.01.00.26
Huawei Technologies Co., Ltd. B315s-22 — versions 21.318.01.00.26

Weakness classification (CWE)

CWE-200 — Information Disclosure

References

www.exploit-db.com/exploits/45971/ (exploit)
www.huawei.com/en/psirt/security-notices/huawei-sn-20180903-01-b315s-en (Vendor Advisory)

Frequently asked questions

What is CVE-2018-7921?: CVE-2018-7921 is a medium-severity vulnerability in Huawei B315s-22, classified under Information Disclosure. CVSS score: 6.5/10. Published 2018-09-12.
How severe is CVE-2018-7921?: Medium severity. CVSS v3 base score is 6.5 out of 10.