CVE-2021-35126

Local memory corruption via unchecked array index

Published Jun 14, 2022 · Updated Aug 4, 2024

Memory corruption in the DSP service in Qualcomm Snapdragon allows local users to corrupt memory by supplying crafted input parameters. The service accepts an input parameter as an array index without confirming that it references a valid array position, causing an out-of-bounds access. Local access is required, and public sources do not identify the affected DSP request, parameter, or a more specific consequence.

CVSS severity8.4
High
EPSS probability0.16%
Next 30 days · Sep 17, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory corruption in the DSP service in Qualcomm Snapdragon allows local users to corrupt memory by supplying crafted input parameters. The service accepts an input parameter as an array index without confirming that it references a valid array position, causing an out-of-bounds access. Local access is required, and public sources do not identify the affected DSP request, parameter, or a more specific consequence.

The record

CVE
CVE-2021-35126
Published
Jun 14, 2022
Updated
Aug 4, 2024
Vendor
Qualcomm
Product
Snapdragon
Classifications
CWE-129
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 14, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=QAM8295P, QCA6391, QCA6696, QCM6490, QCS6490, SA8295P, SD 8 Gen1 5G, SD 8cx Gen3, SD778G, SD780G, SD888, SD888 5G, SM7315, SM7325P, WCD9370, WCD9375, WCD9380, WCD9385, WCN6740, WCN6750, WCN6850, WCN6851, WCN6855, WCN6856, WSA8830, WSA8835

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Qualcomm · Snapdragonversion=QAM8295P, QCA6391, QCA6696, QCM6490, QCS6490, SA8295P, SD 8 Gen1 5G, SD 8cx Gen3, SD778G, SD780G, SD888, SD888 5G, SM7315, SM7325P, WCD9370, WCD9375, WCD9380, WCD9385, WCN6740, WCN6750, WCN6850, WCN6851, WCN6855, WCN6856, WSA8830, WSA8835

Published CVSS scores

7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.2NIST NVDAV:L/AC:L/Au:N/C:C/I:C/A:C
8.4Qualcomm, Inc.CVSS:3.1/AV:L/AC:L/PR:N/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-129Improper Validation of Array Index

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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