How severe is CVE-2016-6839?

CVE-2016-6839 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2016-6839 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-6839?

CVE-2016-6839 primarily affects Huawei Fusionaccess. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2016-6839?

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

When was CVE-2016-6839 published?

CVE-2016-6839 was published on 2016-09-07 and last updated on 2026-06-17.

CVE-2016-6839

CVE-2016-6839 is a medium-severity vulnerability in Huawei Fusionaccess with a CVSS 3.x base score of 6.1. 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-113.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
CVSS v2: 4.3
EPSS exploit prediction: 1% (52nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-113
Affected product: Huawei Fusionaccess
Published: 2016-09-07
Last modified: 2026-06-17

Description

CRLF injection vulnerability in Huawei FusionAccess before V100R006C00 allows remote attackers to inject arbitrary HTTP headers and conduct HTTP response splitting attacks via unspecified vectors.

Frequently asked questions

What is CVE-2016-6839?: CRLF injection vulnerability in Huawei FusionAccess before V100R006C00 allows remote attackers to inject arbitrary HTTP headers and conduct HTTP response splitting attacks via unspecified vectors.
How severe is CVE-2016-6839?: CVE-2016-6839 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2016-6839 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-6839?: CVE-2016-6839 primarily affects Huawei Fusionaccess. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2016-6839?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2016-6839 published?: CVE-2016-6839 was published on 2016-09-07 and last updated on 2026-06-17.

References

Affected products (3)

cpe:2.3:a:huawei:fusionaccess:v100r005c10:*:*:*:*:*:*:*
cpe:2.3:a:huawei:fusionaccess:v100r005c20:*:*:*:*:*:*:*
cpe:2.3:a:huawei:fusionaccess:v100r005c30:*:*:*:*:*:*:*

More vulnerabilities in Huawei Fusionaccess

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