CVE-2021-22321

mediumpriority · track · 21EPSS 0.007 · 54 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.74% (54th) EPSS

CVSS 5 · medium

Is it mine?

68 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-28

There is a use-after-free vulnerability in a Huawei product. A module cannot deal with specific operations in special scenarios. Attackers can exploit this vulnerability by performing malicious operations. This can cause memory use-after-free, compromising normal service. Affected product include some versions of NIP6300, NIP6600, NIP6800, S1700, S2700, S5700, S6700 , S7700, S9700, Secospace USG6300, Secospace USG6500, Secospace USG6600 and USG9500.

cvss

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

5.3

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.05mediumAV:N/AC:L/Au:N/C:N/I:N/A:Pprimary · NVD / NIST USexploitability 10 · impact 2.9

v3.15.3mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Lprimary · NVD / NIST USexploitability 3.9 · impact 1.4

v3.14.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-416USprimary

affected products (68)

Products and version ranges known to be affected.

n/a NIP6600;NIP6800;S12700;S1700;S2700;S5700;S6700;S7700;S9700;Secospace USG6300;Secospace USG6500;Secospace USG6600;USG9500≤ V500R001C60enisa_euvdEU
n/a NIP6600;NIP6800;S12700;S1700;S2700;S5700;S6700;S7700;S9700;Secospace USG6300;Secospace USG6500;Secospace USG6600;USG9500≤ V200R008C00,V200R010C00,V200R010C00SPC300,V200R011C00,V200R011C00SPC100,V200R011C10enisa_euvdEU
n/a NIP6600;NIP6800;S12700;S1700;S2700;S5700;S6700;S7700;S9700;Secospace USG6300;Secospace USG6500;Secospace USG6600;USG9500≤ V200R007C01,V200R007C01B102,V200R008C00,V200R010C00,V200R010C00SPC300,V200R011C00,V200R011C00SPC100,V200R011C10enisa_euvdEU
n/a NIP6600;NIP6800;S12700;S1700;S2700;S5700;S6700;S7700;S9700;Secospace USG6300;Secospace USG6500;Secospace USG6600;USG9500≤ V500R001C30,V500R001C60enisa_euvdEU
n/a NIP6600;NIP6800;S12700;S1700;S2700;S5700;S6700;S7700;S9700;Secospace USG6300;Secospace USG6500;Secospace USG6600;USG9500≤ V200R008C00,V200R010C00,V200R010C00SPC300,V200R011C00,V200R011C00SPC100,V200R011C10,V200R011C10SPC100enisa_euvdEU
n/a NIP6600;NIP6800;S12700;S1700;S2700;S5700;S6700;S7700;S9700;Secospace USG6300;Secospace USG6500;Secospace USG6600;USG9500≤ V200R009C00SPC200,V200R009C00SPC500,V200R010C00,V200R010C00SPC300,V200R011C00,V200R011C00SPC100,V200R011C10enisa_euvdEU
n/a NIP6600;NIP6800;S12700;S1700;S2700;S5700;S6700;S7700;S9700;Secospace USG6300;Secospace USG6500;Secospace USG6600;USG9500≤ V500R001C30enisa_euvdEU
huawei nip6300 firmware= v500r001c30nvdUScpe:2.3:o:huawei:nip6300_firmware:*:*:*:*:*:*:*:*
huawei nip6300 firmware= v500r001c60nvdUScpe:2.3:o:huawei:nip6300_firmware:*:*:*:*:*:*:*:*
huawei nip6600 firmware= v500r001c30nvdUScpe:2.3:o:huawei:nip6600_firmware:*:*:*:*:*:*:*:*
huawei nip6800 firmware= v500r001c60nvdUScpe:2.3:o:huawei:nip6800_firmware:*:*:*:*:*:*:*:*
huawei s12700 firmware= v200r007c01nvdUScpe:2.3:o:huawei:s12700_firmware:*:*:*:*:*:*:*:*
huawei s12700 firmware= v200r007c01b102nvdUScpe:2.3:o:huawei:s12700_firmware:*:*:*:*:*:*:*:*
huawei s12700 firmware= v200r008c00nvdUScpe:2.3:o:huawei:s12700_firmware:*:*:*:*:*:*:*:*
huawei s12700 firmware= v200r010c00nvdUScpe:2.3:o:huawei:s12700_firmware:*:*:*:*:*:*:*:*
huawei s12700 firmware= v200r010c00spc300nvdUScpe:2.3:o:huawei:s12700_firmware:*:*:*:*:*:*:*:*
huawei s12700 firmware= v200r011c00nvdUScpe:2.3:o:huawei:s12700_firmware:*:*:*:*:*:*:*:*
huawei s12700 firmware= v200r011c00spc100nvdUScpe:2.3:o:huawei:s12700_firmware:*:*:*:*:*:*:*:*
huawei s12700 firmware= v200r011c10nvdUScpe:2.3:o:huawei:s12700_firmware:*:*:*:*:*:*:*:*
huawei s1700 firmware= v200r009c00spc200nvdUScpe:2.3:o:huawei:s1700_firmware:*:*:*:*:*:*:*:*

showing 20 of 68

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 2021-03-22modified 2026-06-17

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+12281 more

references (4)

External citations — patches, advisories, analysis.

scry

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