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NVD / CVE Program· CNA qualcomm

CVE-2023-21634: Improper Restriction of Operations within the Bounds of a Memory Buffer in Radio Interface Layer

Noroxi assessment

Priority: Monitor (action score 31/100)

  • 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: 0.14% (FIRST EPSS).
  • Someone with local access to the system 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

Memory Corruption in Radio Interface Layer while sending an SMS or writing an SMS to SIM.

HighCVSS 7.8 · v3.1—No exploit No fix recorded
Published
Dec 4, 2023
Updated
Jun 17, 2026
EPSS
0.1% · 3th percentile

Report tools

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Action score

31

Monitor

Low priority for now.

CVSS
31 / 40 · 7.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

CNA vs NVD score

NVD
7.8
CNA · qualcomm
6.7
1.1 point gap

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

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-2023-21634

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
qualcommaqt1000 firmware
qualcommaqt1000
qualcommfastconnect 6200 firmware
qualcommfastconnect 6200
qualcommfastconnect 6800 firmware
qualcommfastconnect 6800
qualcommfastconnect 6900 firmware
qualcommfastconnect 6900
qualcommqca6310 firmware
qualcommqca6310
qualcommqca6320 firmware
qualcommqca6320

and 90 more

Affected versions

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

  • qualcomm aqt1000 firmwareall versions
  • qualcomm fastconnect 6200 firmwareall versions
  • qualcomm fastconnect 6800 firmwareall versions
  • qualcomm fastconnect 6900 firmwareall versions
  • qualcomm qca6310 firmwareall versions
  • qualcomm qca6320 firmwareall versions
  • qualcomm qca6391 firmwareall versions
  • qualcomm qca6420 firmwareall versions
  • qualcomm qca6426 firmwareall versions
  • qualcomm qca6430 firmwareall versions
  • qualcomm qca6436 firmwareall versions
  • qualcomm qca6574au firmwareall versions
  • qualcomm qca6595au firmwareall versions
  • qualcomm qca6696 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

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

    • AQT1000, FastConnect 6200, FastConnect 6800, FastConnect 6900, QCA6310, QCA6320, QCA6391, QCA6420, QCA6426, QCA6430, QCA6436, QCA6574AU … (+28)affected

Same product

qualcomm: all records

Other highest-scoring records for the same primary product.

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    64This week
  • CVE-2025-21480Incorrect Authorization in Graphics WindowsKEV
    64This week
  • CVE-2021-1965Possible buffer overflow due to lack of parameter length check during MBSSID scan IE parse in Snapdragon Auto, Snapdragon Compute, Snapdrago
    40Plan

Published before and after this one in the same product

  • ← EarlierCVE-2023-28570Nov 7, 2023 · Buffer Copy without Checking Size of Input in Audio
    31Monitor
  • ← EarlierCVE-2023-33055Nov 7, 2023 · Buffer Copy Without Checking Size of Input in Audio
    31Monitor
  • Later →CVE-2023-22383Dec 4, 2023 · Use After Free in Camera
    31Monitor

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.

  • CVE-2023-2166390 days apartImproper Restrictions of Operations within the Bounds of a Memory Buffer in Display
    31Monitor
  • CVE-2023-21637153 days apartImproper Restrictions of Operations within the Bounds of a Memory Buffer in Linux
    31Monitor
  • CVE-2022-33267181 days apartImproper restriction of operations within the bounds of memory buffer in Linux
    31Monitor
  • CVE-2023-43554210 days apartImproper Restriction of Operations withing the Bounds of a Memory Buffer in DSP Services
    31Monitor
  • CVE-2022-25681356 days apartPossible memory corruption in kernel while performing memory access due to hypervisor not correctly invalidated the processor translation ca
    31Monitor
  • CVE-2022-25661411 days apartMemory corruption due to untrusted pointer dereference in kernel in Snapdragon Auto, Snapdragon Compute, Snapdragon Consumer IOT, Snapdragon
    31Monitor

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

  • Someone with local access to the system 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
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-119 · Improper Restriction of Operations within the Bounds of a Memory Buffer

CVSS vector

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

ATT&CK techniques

—

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