How severe is CVE-2016-3678?

CVE-2016-3678 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2016-3678 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-3678?

CVE-2016-3678 primarily affects Huawei S5300 Firmware. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2016-3678?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2016-3678 published?

CVE-2016-3678 was published on 2016-04-11 and last updated on 2026-06-17.

CVE-2016-3678

CVE-2016-3678 is a high-severity vulnerability in Huawei S5300 Firmware with a CVSS 3.x base score of 7.5. 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: High (CVSS 3.x base score 7.5)
CVSS v2: 7.8
EPSS exploit prediction: 1% (67th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Huawei S5300 Firmware
Published: 2016-04-11
Last modified: 2026-06-17

Description

Huawei Quidway S9700, S5700, S5300, S9300, and S7700 switches with software before V200R003SPH012 allow remote attackers to cause a denial of service (switch restart) via crafted traffic.

Frequently asked questions

What is CVE-2016-3678?: Huawei Quidway S9700, S5700, S5300, S9300, and S7700 switches with software before V200R003SPH012 allow remote attackers to cause a denial of service (switch restart) via crafted traffic.
How severe is CVE-2016-3678?: CVE-2016-3678 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2016-3678 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-3678?: CVE-2016-3678 primarily affects Huawei S5300 Firmware. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2016-3678?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2016-3678 published?: CVE-2016-3678 was published on 2016-04-11 and last updated on 2026-06-17.

References

http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20160330-01-switch-en

Affected products (5)

cpe:2.3:a:huawei:s5300_firmware:v200r003c00spc500:*:*:*:*:*:*:*
cpe:2.3:a:huawei:s5700_firmware:v200r003c00spc500:*:*:*:*:*:*:*
cpe:2.3:a:huawei:s7700_firmware:v200r003c00spc500:*:*:*:*:*:*:*
cpe:2.3:a:huawei:s9300_firmware:v200r003c00spc500:*:*:*:*:*:*:*
cpe:2.3:a:huawei:s9700_firmware:v200r003c00spc500:*:*:*:*:*:*:*

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