What is CVE-2016-6901?

CVE-2016-6901 is a medium-severity vulnerability in Huawei Ar100, classified under Improper Input Validation. CVSS score: 6.5/10. Published 2016-09-26.

How severe is CVE-2016-6901?

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

Improper input validation in Huawei Ar100

CVE-2016-6901

Format string vulnerability in Huawei AR100, AR120, AR150, AR200, AR500, AR550, AR1200, AR2200, AR2500, AR3200, and AR3600 routers with software before V200R007C00SPC900 and NetEngine 16EX routers with software before V200R007C00SPC900 allows remote authenticated users to cause a denial of service via format string specifiers in vectors involving partial commands.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

Published 2016-09-26 · last modified 2026-06-17.

CVSS v3 metric

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

EPSS exploit prediction

EPSS: 0.010 (62.1th percentile), scored 2026-10-23.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 62nd percentile — 62.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

www.securityfocus.com/bid/92618 (VDB Entry, Third Party Advisory, vdb-entry)
www.huawei.com/en/psirt/security-advisories/huawei-sa-20160824-01-vrp-en (Vendor Advisory)

Frequently asked questions

What is CVE-2016-6901?: CVE-2016-6901 is a medium-severity vulnerability in Huawei Ar100, classified under Improper Input Validation. CVSS score: 6.5/10. Published 2016-09-26.
How severe is CVE-2016-6901?: Medium severity. CVSS v3 base score is 6.5 out of 10.