CVE-2023-21655

Memory corruption via Audio metadata integer overflow

Published Sep 5, 2023 · Updated Aug 2, 2024

Integer overflow in Qualcomm Snapdragon Audio firmware allows local administrators to corrupt memory through crafted metadata. The Audio metadata validation and mapping path performs overflow-prone arithmetic before mapping metadata, but Qualcomm has not disclosed the affected function or operands. Exploitation requires high local privileges and can compromise confidentiality, integrity, or availability within the affected firmware context.

CVSS severity6.7
Medium
EPSS probability0.11%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Integer overflow in Qualcomm Snapdragon Audio firmware allows local administrators to corrupt memory through crafted metadata. The Audio metadata validation and mapping path performs overflow-prone arithmetic before mapping metadata, but Qualcomm has not disclosed the affected function or operands. Exploitation requires high local privileges and can compromise confidentiality, integrity, or availability within the affected firmware context.

The record

CVE
CVE-2023-21655
Published
Sep 5, 2023
Updated
Aug 2, 2024
Vendor
Qualcomm
Product
SA8155P Firmware
Classifications
CWE-190
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Sep 5, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=*

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Qualcomm · SA8155P Firmwareversion=0 <=*
Qualcomm · Qualcomm WCN3660B Firmwareversion=0 <=*
Qualcomm · SW5100 Firmwareversion=0 <=*
Qualcomm · SW5100P Firmwareversion=0 <=*
Qualcomm · Qualcomm SDA429W Firmwareversion=0 <=*
Qualcomm · SA6150P Firmwareversion=0 <=*
Qualcomm · WCN3680B Firmwareversion=0 <=*
Qualcomm · Qualcomm WCN6855 Firmwareversion=0 <=*
Qualcomm · SA8195P Firmwareversion=0 <=*
Qualcomm · Snapdragonversion=QCA6391; version=QCA6574AU; version=QCA6696; version=QCC5100; version=SA6145P; version=SA6150P; version=SA6155P; version=SA8145P; version=SA8150P; version=SA8155P; version=SA8195P; version=SD888 5G; version=SD 8 Gen1 5G; version=SDA429W; version=SW5100; version=SW5100P; version=WCD9380; version=WCD9385; version=WCN3610; version=WCN3660B; version=WCN3680B; version=WCN3980; version=WCN3988; version=WCN6850; version=WCN6851; version=WCN6855; version=WCN6856; version=WCN7850; version=WCN7851; version=WSA8830; version=WSA8835
Qualcomm · SA6155P Firmwareversion=0 <=*
Qualcomm · Qualcomm WCN6856 Firmwareversion=0 <=*
Qualcomm · WCN7850 Firmwareversion=0 <=*
Qualcomm · SA8145P Firmwareversion=0 <=*
Qualcomm · WCN7851 Firmwareversion=0 <=*
Qualcomm · SA8150P Firmwareversion=0 <=*
Qualcomm · SD 8 Gen1 5G Firmwareversion=0 <=*
Qualcomm · WCN3988 Firmwareversion=0 <=*
Qualcomm · QCA6574AU Firmwareversion=0 <=*
Qualcomm · Qualcomm SD888 5G Firmwareversion=0 <=*
Qualcomm · WCD9380 Firmwareversion=0 <=*
Qualcomm · SA6145P Firmwareversion=0 <=*
Qualcomm · Qualcomm WCN3610 Firmwareversion=0 <=*
Qualcomm · QCC5100 Firmwareversion=0 <=*
Qualcomm · Qualcomm WCN6851 Firmwareversion=0 <=*
Qualcomm · WSA8830 Firmwareversion=0 <=*
Qualcomm · QCA6391 Firmwareversion=0 <=*
Qualcomm · WCD9385 Firmwareversion=0 <=*
Qualcomm · WCN3980 Firmwareversion=0 <=*
Qualcomm · Qualcomm WCN6850 Firmwareversion=0 <=*
Qualcomm · WSA8835 Firmwareversion=0 <=*
Qualcomm · QCA6696 Firmwareversion=0 <=*

Published CVSS scores

7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
6.7QualcommCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-190Integer Overflow or Wraparound

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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