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NVD / CVE Program· CNA intel

CVE-2021-33155: Improper input validation in firmware for some Intel(R) Wireless Bluetooth(R) and Killer(TM) Bluetooth(R) products before version 22.100 may

Noroxi assessment

Priority: Monitor (action score 22/100)

  • 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: 0.46% (FIRST EPSS).
  • Someone on the same network segment can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: kernel-firmware (openSUSE:Leap 15.3) 20210208-150300.4.7.1; kernel-firmware (openSUSE:Leap 15.4) 20220509-150400.4.5.1; kernel-firmware (SUSE:Linux Enterprise High Performance Computing 15 SP1-ESPOS) 20200107-150100.3.31.1, 20200107-3.26.1.

Low priority for now. Upgrade to kernel-firmware (openSUSE:Leap 15.3) 20210208-150300.4.7.1; kernel-firmware (openSUSE:Leap 15.4) 20220509-150400.4.5.1; kernel-firmware (SUSE:Linux Enterprise High Performance Computing 15 SP1-ESPOS) 20200107-150100.3.31.1, 20200107-3.26.1 or later.

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

Improper input validation in firmware for some Intel(R) Wireless Bluetooth(R) and Killer(TM) Bluetooth(R) products before version 22.100 may allow an authenticated user to potentially enable denial of service via adjacent access.

MediumCVSS 5.7 · v3.1—No exploit Fix available
Published
Feb 9, 2022
Updated
Jun 16, 2026
EPSS
0.4% · 40th percentile

Report tools

JSON

Action score

22

Monitor

Low priority for now.

CVSS
22 / 40 · 5.7 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.4%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

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

Follow CVE-2021-33155

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
intelax211 firmware
intelax211
intelax210 firmware
intelax210
intelax201 firmware
intelax201
intelax200 firmware
intelax200
intelac 9560 firmware
intelac 9560
intelac 9462 firmware
intelac 9462

and 20 more

Affected versions

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

  • intel ac 1550 firmwarebefore 22.100
  • intel ac 3165 firmwarebefore 22.100
  • intel ac 7265 firmwarebefore 22.100
  • intel ac 8260 firmwarebefore 22.100
  • intel ac 8265 firmwarebefore 22.100
  • intel ac 9260 firmwarebefore 22.100
  • intel ac 9461 firmwarebefore 22.100
  • intel ac 9462 firmwarebefore 22.100
  • intel ac 9560 firmwarebefore 22.100
  • intel ac3168 firmwarebefore 22.100
  • intel ax1650 firmwarebefore 22.100
  • intel ax1675 firmwarebefore 22.100
  • intel ax200 firmwarebefore 22.100
  • intel ax201 firmwarebefore 22.100
  • intel ax210 firmwarebefore 22.100
  • intel ax211 firmwarebefore 22.100

Versions reported by the vendor

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

  • n/a Intel(R) Wireless Bluetooth(R) and Killer(TM) Bluetooth(R) products

    • before version 22.100affected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
openSUSE:Leap 15.3kernel-firmwarebefore 20210208-150300.4.7.120210208-150300.4.7.1
openSUSE:Leap 15.4kernel-firmwarebefore 20220509-150400.4.5.120220509-150400.4.5.1
SUSE:Linux Enterprise High Performance Computing 15 SP1-ESPOSkernel-firmwarebefore 20200107-150100.3.31.120200107-150100.3.31.1
SUSE:Linux Enterprise High Performance Computing 15 SP1-ESPOSkernel-firmwarebefore 20200107-3.26.120200107-3.26.1
SUSE:Linux Enterprise High Performance Computing 15-ESPOSkernel-firmwarebefore 20191118-3.39.120191118-3.39.1
SUSE:Linux Enterprise Module for Basesystem 15 SP3kernel-firmwarebefore 20210208-150300.4.7.120210208-150300.4.7.1
SUSE:Linux Enterprise Module for Basesystem 15 SP4kernel-firmwarebefore 20220509-150400.4.5.120220509-150400.4.5.1
SUSE:OpenStack Cloud 9kernel-firmwarebefore 20190618-5.22.120190618-5.22.1

Same product

intel: all records

Other highest-scoring records for the same primary product.

  • CVE-2021-33139Improper conditions check in firmware for some Intel(R) Wireless Bluetooth(R) and Killer(TM) Bluetooth(R) products before version 22.100 may
    22Monitor

Remediation

Which version to upgrade to

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

Product / packageFixed versionSource
opensuse:kernel-firmware20220509-150400.4.5.1 · openSUSE:Leap 15.4Package registry (OSV)
suse:kernel-firmware20200107-3.26.1 · SUSE:Linux Enterprise High Performance Computing 15 SP1-ESPOSPackage registry (OSV)
suse:kernel-firmware20220509-150400.4.5.1 · SUSE:Linux Enterprise Module for Basesystem 15 SP4Package registry (OSV)

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.

No history yet (it accumulates with the daily EPSS job).

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

The product’s vendor appears in a public program. Matched by name; verify the scope text in the program.

Technical details

Attack conditions

  • Someone on the same network segment can trigger it.
  • A low-privileged account is enough.
  • 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
Adjacent
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-20 · Improper Input Validation

CVSS vector

CVSS:3.1/AV:A/AC:L/PR:L/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.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

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

All records