CVE-2016-4577

mediumpriority · track · 30EPSS 0.010 · 63 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

1.00% (63rd) EPSS

CVSS 6.8 · medium

Is it mine?

6 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-28

Buffer overflow in the Smart DNS functionality in the Huawei NGFW Module and Secospace USG6300, USG6500, USG6600, and USG9500 firewalls with software before V500R001C20SPC100 allows remote attackers to cause a denial of service or execute arbitrary code via a crafted packet, related to "illegitimate parameters."

cvss

Technical severity, 0–10. One row per scoring source.

7.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.8–7.5

v2.06.8mediumAV:A/AC:H/Au:N/C:C/I:C/A:Cprimary · NVD / NIST USexploitability 3.2 · impact 10

v3.07.5highCVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 1.6 · impact 5.9

v3.06.9mediumCVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-119USprimary

affected products (6)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
huawei ngfw module firmware= v500r001c00nvdUScpe:2.3:o:huawei:ngfw_module_firmware:*:*:*:*:*:*:*:*
huawei secospace usg6300 firmware= v500r001c00nvdUScpe:2.3:o:huawei:secospace_usg6300_firmware:*:*:*:*:*:*:*:*
huawei secospace usg6500 firmware= v500r001c00nvdUScpe:2.3:o:huawei:secospace_usg6500_firmware:*:*:*:*:*:*:*:*
huawei secospace usg6600 firmware= v500r001c00nvdUScpe:2.3:o:huawei:secospace_usg6600_firmware:*:*:*:*:*:*:*:*
huawei usg9500 firmware= v500r001c00nvdUScpe:2.3:o:huawei:usg9500_firmware:*:*:*:*:*:*:*:*

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd NVD CVE.org MITRE

published 2016-05-23modified 2026-06-17

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+21039 more

references (6)

External citations — patches, advisories, analysis.

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