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NVD / CVE Program· CNA qualcomm

CVE-2023-21647: Improper Input Validation in Bluetooth HOST

Noroxi assessment

Priority: Monitor (action score 26/100)

  • 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: 0.38% (FIRST EPSS).
  • Anyone who can reach it over the internet can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • According to the record, no fixed version is available yet.

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

Information disclosure in Bluetooth when an GATT packet is received due to improper input validation.

MediumCVSS 6.5 · v3.1—No exploit No fix recorded
Published
Aug 8, 2023
Updated
Jun 17, 2026
EPSS
0.3% · 32th percentile

Report tools

JSON

Action score

26

Monitor

Low priority for now.

CVSS
26 / 40 · 6.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.3%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
6.5
CNA · qualcomm
6.5
agree

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

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-2023-21647

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
qualcommqca6390 firmware
qualcommqca6390
qualcommqca6391 firmware
qualcommqca6391
qualcommqca6426 firmware
qualcommqca6426
qualcommqca6436 firmware
qualcommqca6436
qualcommqca6574au firmware
qualcommqca6574au
qualcommqca6595au firmware
qualcommqca6595au

and 74 more

Affected versions

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

  • qualcomm qca6390 firmwareall versions
  • qualcomm qca6391 firmwareall versions
  • qualcomm qca6426 firmwareall versions
  • qualcomm qca6436 firmwareall versions
  • qualcomm qca6574au firmwareall versions
  • qualcomm qca6595au firmwareall versions
  • qualcomm qca6696 firmwareall versions
  • qualcomm qcc5100 firmwareall versions
  • qualcomm qcn9074 firmwareall versions
  • qualcomm qcs410 firmwareall versions
  • qualcomm qcs610 firmwareall versions
  • qualcomm sa6145p firmwareall versions
  • qualcomm sa6150p firmwareall versions
  • qualcomm sa6155p firmwareall versions
  • qualcomm sa8145p firmwareall versions
  • qualcomm sa8150p firmwareall versions
  • qualcomm sa8155p firmwareall versions
  • qualcomm sa8195p firmwareall versions
  • qualcomm sd 8 gen1 5g firmwareall versions
  • qualcomm sd865 5g firmwareall versions

Versions reported by the vendor

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

  • Qualcomm, Inc. Snapdragon

    • QCA6390, QCA6391, QCA6426, QCA6436, QCA6574AU, QCA6595AU, QCA6696, QCC5100, QCN9074, QCS410, QCS610, SA6145P … (+28)affected

Same product

qualcomm: all records

Other highest-scoring records for the same primary product.

  • CVE-2020-11156u'Buffer over-read issue in Bluetooth estack due to lack of check for invalid length of L2cap packet received from peer device.' in Snapdrag
    32Monitor
  • CVE-2021-30336Possible out of bound read due to lack of domain input validation while processing APK close session request in Snapdragon Auto, Snapdragon
    31Monitor
  • CVE-2023-21667Buffer Over-read in Bluetooth HOST
    26Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2019-10618Dec 12, 2019 · Driver may access an invalid address while processing IO control due to lack of check of address validation in Snapdragon Connectivity in QC
    22Monitor
  • ← EarlierCVE-2021-30314Jan 13, 2022 · Lack of validation for third party application accessing the service can lead to information disclosure in Snapdragon Auto, Snapdragon Compu
    22Monitor

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.

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

No known public program.

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

Technical details

Attack conditions

  • Anyone who can reach it over the internet 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
high · data can be read
Integrity
none
Availability
none
Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
None
Availability impact
None

Weakness class (CWE)

CWE-20 · Improper Input Validation

CVSS vector

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

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

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