CVE-2020-1866

lowpriority · track · 26EPSS 0.004 · 29 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.36% (29th) EPSS

CVSS 3.3 · low

Is it mine?

21 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-28

There is an out-of-bounds read vulnerability in several products. The software reads data past the end of the intended buffer when parsing certain crafted DHCP messages. Successful exploit could cause certain service abnormal. Affected product versions include:NIP6800 versions V500R001C30,V500R001C60SPC500,V500R005C00;S12700 versions V200R008C00;S2700 versions V200R008C00;S5700 versions V200R008C00;S6700 versions V200R008C00;S7700 versions V200R008C00;S9700 versions V200R008C00;Secospace USG6600 versions V500R001C30SPC200,V500R001C30SPC600,V500R001C60SPC500,V500R005C00;USG9500 versions V500R001C30SPC300,V500R001C30SPC600,V500R001C60SPC500,V500R005C00.

cvss

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

6.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–medium · 3.3–6.5

v2.03.3lowAV:A/AC:L/Au:N/C:N/I:N/A:Pprimary · NVD / NIST USexploitability 6.5 · impact 2.9

v3.16.5mediumCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hprimary · NVD / NIST USexploitability 2.8 · impact 3.6

v3.16mediumCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-125USprimary

affected products (21)

Products and version ranges known to be affected.

n/a NIP6800;S12700;S2700;S5700;S6700;S7700;S9700;Secospace USG6600;USG9500≤ V500R001C30SPC200,V500R001C30SPC600,V500R001C60SPC500,V500R005C00enisa_euvdEU
n/a NIP6800;S12700;S2700;S5700;S6700;S7700;S9700;Secospace USG6600;USG9500≤ V500R001C30SPC300,V500R001C30SPC600,V500R001C60SPC500,V500R005C00enisa_euvdEU
n/a NIP6800;S12700;S2700;S5700;S6700;S7700;S9700;Secospace USG6600;USG9500≤ V500R001C30,V500R001C60SPC500,V500R005C00enisa_euvdEU
n/a NIP6800;S12700;S2700;S5700;S6700;S7700;S9700;Secospace USG6600;USG9500≤ V200R008C00enisa_euvdEU
huawei nip6800 firmware= v500r001c30nvdUScpe:2.3:o:huawei:nip6800_firmware:*:*:*:*:*:*:*:*
huawei nip6800 firmware= v500r001c60spc500nvdUScpe:2.3:o:huawei:nip6800_firmware:*:*:*:*:*:*:*:*
huawei nip6800 firmware= v500r005c00nvdUScpe:2.3:o:huawei:nip6800_firmware:*:*:*:*:*:*:*:*
huawei s12700 firmware= v200r008c00nvdUScpe:2.3:o:huawei:s12700_firmware:*:*:*:*:*:*:*:*
huawei s2700 firmware= v200r008c00nvdUScpe:2.3:o:huawei:s2700_firmware:*:*:*:*:*:*:*:*
huawei s5700 firmware= v200r008c00nvdUScpe:2.3:o:huawei:s5700_firmware:*:*:*:*:*:*:*:*
huawei s6700 firmware= v200r008c00nvdUScpe:2.3:o:huawei:s6700_firmware:*:*:*:*:*:*:*:*
huawei s7700 firmware= v200r008c00nvdUScpe:2.3:o:huawei:s7700_firmware:*:*:*:*:*:*:*:*
huawei s9700 firmware= v200r008c00nvdUScpe:2.3:o:huawei:s9700_firmware:*:*:*:*:*:*:*:*
huawei secospace usg6600 firmware= v500r001c30spc200nvdUScpe:2.3:o:huawei:secospace_usg6600_firmware:*:*:*:*:*:*:*:*
huawei secospace usg6600 firmware= v500r001c30spc600nvdUScpe:2.3:o:huawei:secospace_usg6600_firmware:*:*:*:*:*:*:*:*
huawei secospace usg6600 firmware= v500r001c60spc500nvdUScpe:2.3:o:huawei:secospace_usg6600_firmware:*:*:*:*:*:*:*:*
huawei secospace usg6600 firmware= v500r005c00nvdUScpe:2.3:o:huawei:secospace_usg6600_firmware:*:*:*:*:*:*:*:*
huawei usg9500 firmware= v500r001c30spc300nvdUScpe:2.3:o:huawei:usg9500_firmware:*:*:*:*:*:*:*:*
huawei usg9500 firmware= v500r001c30spc600nvdUScpe:2.3:o:huawei:usg9500_firmware:*:*:*:*:*:*:*:*
huawei usg9500 firmware= v500r001c60spc500nvdUScpe:2.3:o:huawei:usg9500_firmware:*:*:*:*:*:*:*:*

showing 20 of 21

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 2021-01-13modified 2026-06-17

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+11877 more

references (6)

External citations — patches, advisories, analysis.

scry

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