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NVD / CVE Program· CNA huawei

CVE-2021-22320: There is a denial of service vulnerability in Huawei products.

Noroxi assessment

Priority: Monitor (action score 30/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.75% (FIRST EPSS); higher than 54.7% of all records.
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • According to the record, no fixed version is available yet.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Update when a fix is released; follow the vendor's advisory.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

There is a denial of service vulnerability in Huawei products. A module cannot deal with specific messages correctly. Attackers can exploit this vulnerability by sending malicious messages to an affected module. This can lead to denial of service. Affected product include some versions of IPS Module, NGFW Module, NIP6600, NIP6800, Secospace USG6300, Secospace USG6500 and Secospace USG6600.

HighCVSS 7.5 · v3.1—No exploit No fix recorded
Published
Mar 22, 2021
Updated
Jun 16, 2026
EPSS
0.7% · 54th percentile
CWE
—

Report tools

JSON

Action score

30

Monitor

Low priority for now.

CVSS
30 / 40 · 7.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.7%

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • No fixed version yet

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2021-22320

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
huaweiips module firmware
huaweiips module
huaweingfw module firmware
huaweingfw module
huaweinip6600 firmware
huaweinip6600
huaweinip6800 firmware
huaweinip6800
huaweisecospace usg6300 firmware
huaweisecospace usg6300
huaweisecospace usg6500 firmware
huaweisecospace usg6500

and 2 more

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • huawei ips module firmwarev500r005c00spc100
  • huawei ips module firmwarev500r005c00spc200
  • huawei ips module firmwarev500r005c20spc300
  • huawei ngfw module firmwarev500r005c00spc100
  • huawei ngfw module firmwarev500r005c00spc200
  • huawei ngfw module firmwarev500r005c20spc300
  • huawei nip6600 firmwarev500r001c30spc200
  • huawei nip6600 firmwarev500r001c30spc600
  • huawei nip6600 firmwarev500r001c60spc500
  • huawei nip6600 firmwarev500r005c00spc100
  • huawei nip6600 firmwarev500r005c00spc200
  • huawei nip6600 firmwarev500r005c20spc300
  • huawei nip6600 firmwarev500r005c20spc500
  • huawei nip6800 firmwarev500r001c60spc500
  • huawei nip6800 firmwarev500r005c00spc100
  • huawei nip6800 firmwarev500r005c00spc200
  • huawei nip6800 firmwarev500r005c20spc300
  • huawei nip6800 firmwarev500r005c20spc500
  • huawei secospace usg6300 firmwarev500r001c30spc200
  • huawei secospace usg6300 firmwarev500r001c30spc600

Versions reported by the vendor

Affected version ranges reported by the assigning authority (huawei). Independent of NVD's CPE analysis and usually ahead of it.

  • n/a IPS Module;NGFW Module;NIP6600;NIP6800;Secospace USG6300;Secospace USG6500;Secospace USG6600

    • V500R005C00SPC100,V500R005C00SPC200,V500R005C20SPC300, V500R001C30SPC200,V500R001C30SPC600,V500R001C60SPC500,V500R005C00SPC100,V500R005C00SPC200,V500R005C20SPC300,V500R005C20SPC500, V500R001C60SPC500,V500R005C00SPC100,V500R005C00SPC200,V500R005C20SPC300,V500R005C20SPC500affected

Same product

huawei: all records

Other highest-scoring records for the same primary product.

  • CVE-2020-9099Huawei products IPS Module; NGFW Module; NIP6300; NIP6600; NIP6800; Secospace USG6300; Secospace USG6500; Secospace USG6600; USG9500 with ve
    39Monitor
  • CVE-2021-37129There is an out of bounds write vulnerability in some Huawei products.
    30Monitor
  • CVE-2017-17157IKEv2 in Huawei IPS Module V500R001C00, V500R001C00SPC200, V500R001C00SPC300, V500R001C00SPC500, V500R001C00SPH303, V500R001C00SPH508, V500R
    30Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2017-17156Feb 15, 2018 · IKEv2 in Huawei IPS Module V500R001C00, V500R001C00SPC200, V500R001C00SPC300, V500R001C00SPC500, V500R001C00SPH303, V500R001C00SPH508, V500R
    30Monitor
  • ← EarlierCVE-2020-9101Jul 17, 2020 · There is an out-of-bounds write vulnerability in some products.
    26Monitor
  • Later →CVE-2021-22312Apr 8, 2021 · There is a memory leak vulnerability in some Huawei products.
    26Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

—

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records