How severe is CVE-2016-6901?

CVE-2016-6901 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2016-6901 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-6901?

CVE-2016-6901 primarily affects Huawei Ar Firmware. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2016-6901?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2016-6901 published?

CVE-2016-6901 was published on 2016-09-26 and last updated on 2026-06-17.

CVE-2016-6901

CVE-2016-6901 is a medium-severity vulnerability in Huawei Ar Firmware with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 6.8
EPSS exploit prediction: 1% (60th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Huawei Ar Firmware
Published: 2016-09-26
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is 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.
How severe is CVE-2016-6901?: CVE-2016-6901 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2016-6901 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-6901?: CVE-2016-6901 primarily affects Huawei Ar Firmware. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2016-6901?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2016-6901 published?: CVE-2016-6901 was published on 2016-09-26 and last updated on 2026-06-17.

References

Affected products (6)

cpe:2.3:o:huawei:ar_firmware:v200r005:*:*:*:*:*:*:*
cpe:2.3:o:huawei:ar_firmware:v200r006:*:*:*:*:*:*:*
cpe:2.3:o:huawei:ar_firmware:v200r007c00:*:*:*:*:*:*:*
cpe:2.3:o:huawei:netengine_16ex_firmware:v200r005:*:*:*:*:*:*:*
cpe:2.3:o:huawei:netengine_16ex_firmware:v200r006:*:*:*:*:*:*:*
cpe:2.3:o:huawei:netengine_16ex_firmware:v200r007c00:*:*:*:*:*:*:*

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