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CVE-2023-33055· NVD / CVE Program· CNA qualcomm

Buffer Copy Without Checking Size of Input in Audio

Memory Corruption in Audio while invoking callback function in driver from ADSP.

HighCVSS 7.8 · v3.1—No exploit No fix recorded

Noroxi analysis

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Published
Nov 7, 2023
Updated
Jun 17, 2026
EPSS
0.1% · 3th percentile
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Report tools

JSON

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%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
7.8
CNA · qualcomm
7.8
agree

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

Affected systems

VendorProduct
qualcommaqt1000 firmware
qualcommaqt1000
qualcommar8035 firmware
qualcommar8035
qualcommcsra6620 firmware
qualcommcsra6620
qualcommcsra6640 firmware
qualcommcsra6640
qualcommwcn3991 firmware
qualcommwcn3991
qualcommwcn3998 firmware
qualcommwcn3998

and 188 more

Affected versions

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

  • qualcomm apq5053-aa firmwareall versions
  • qualcomm aqt1000 firmwareall versions
  • qualcomm ar8035 firmwareall versions
  • qualcomm csra6620 firmwareall versions
  • qualcomm csra6640 firmwareall versions
  • qualcomm qam8255p firmwareall versions
  • qualcomm qam8295p firmwareall versions
  • qualcomm qam8650p firmwareall versions
  • qualcomm qam8775p firmwareall versions
  • qualcomm qca6174a firmwareall versions
  • qualcomm qca6391 firmwareall versions
  • qualcomm qca6420 firmwareall versions
  • qualcomm qca6421 firmwareall versions
  • qualcomm qca6426 firmwareall versions
  • qualcomm qca6430 firmwareall versions
  • qualcomm qca6431 firmwareall versions
  • qualcomm qca6436 firmwareall versions
  • qualcomm qca6574 firmwareall versions
  • qualcomm qca6574a firmwareall versions
  • qualcomm qca6574au 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, AR8035, CSRA6620, CSRA6640, FastConnect 6200, FastConnect 6700, FastConnect 6800, FastConnect 6900, FastConnect 7800, Flight RB5 5G Platform, QAM8255P, QAM8295P … (+28)affected

Same product

qualcomm: all records

Other highest-scoring records for the same primary product.

  • CVE-2025-21479Incorrect Authorization in GraphicsKEV
    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
  • CVE-2023-43548Buffer Copy Without Checking Size of Input in Video
    39Monitor
  • CVE-2023-43519Buffer Copy without Checking Size of Input (`Classic Buffer Overflow`) in Video
    39Monitor
  • CVE-2023-43518Untrusted Pointer Dereference in Video
    39Monitor

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.

  • CVE-2023-2856263 days apartBuffer Copy Without Checking Size of Input in QESL
    39Monitor
  • CVE-2023-4351991 days apartBuffer Copy without Checking Size of Input (`Classic Buffer Overflow`) in Video
    39Monitor
  • CVE-2023-43548118 days apartBuffer Copy Without Checking Size of Input in Video
    39Monitor
  • CVE-2022-40514268 days apartBuffer copy without checking size of input in WLAN Firmware
    39Monitor
  • CVE-2021-35081511 days apartPossible buffer overflow due to improper validation of SSID length received from beacon or probe response during an IBSS session in Snapdrag
    39Monitor
  • CVE-2023-285700 days apartBuffer Copy without Checking Size of Input in Audio
    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-120 · Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

CVSS vector

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

nvd-primary

Root cause

When data is copied, the source length is not compared with the size of the destination buffer. Excess data overwrites adjacent memory.

The bug in code

The whole CWE-120 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

c
char buf[256];memcpy(buf, pkt->data, pkt->len);

Fixed

c
char buf[256];if (pkt->len > sizeof(buf)) {  return -EINVAL;}memcpy(buf, pkt->data, pkt->len);

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