CVE-2021-35077

Local memory corruption via concurrent DSP calls

Published Feb 11, 2022 · Updated Aug 4, 2024

Use after free in Qualcomm Snapdragon DSP Services allows local users to corrupt memory when concurrent calls spawn a dynamic process. DSP Services frees an object while concurrent compute-offload calls can still reference it during dynamic-process creation. Local access is required; Qualcomm reports data disclosure, data modification, and service interruption, but the exact reachable primitive is undisclosed.

CVSS severity8.4
High
EPSS probability0.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use after free in Qualcomm Snapdragon DSP Services allows local users to corrupt memory when concurrent calls spawn a dynamic process. DSP Services frees an object while concurrent compute-offload calls can still reference it during dynamic-process creation. Local access is required; Qualcomm reports data disclosure, data modification, and service interruption, but the exact reachable primitive is undisclosed.

The record

CVE
CVE-2021-35077
Published
Feb 11, 2022
Updated
Aug 4, 2024
Vendor
Qualcomm
Product
Snapdragon
Classifications
CWE-416
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 11, 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

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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=AR8035, QCA6174A, QCA6390, QCA6391, QCA6574, QCA6574A, QCA6574AU, QCA6595AU, QCA6696, QCA8081, QCA8337, QCA9377, QCM2290, QCM4290, QCM6490, QCS2290, QCS4290, QCS6490, QRB5165, QRB5165M, QRB5165N, SA6145P, SA6150P, SA6155P, SA8145P, SA8150P, SA8155P, SA8195P, SD 8 Gen1 5G, SD460, SD480, SD662, SD690 5G, SD750G, SD765, SD765G, SD768G, SD778G, SD780G, SD865 5G, SD870, SD888, SD888 5G, SDX12, SDX55M, SDX65, SM6225, SM6375, SM7250P, SM7315, SM7325P, WCD9335, WCD9370, WCD9375, WCD9380, WCD9385, WCN3910, WCN3950, WCN3988, WCN3991, WCN3998, WCN6740, WCN6750, WCN6850, WCN6851, WCN6855, WCN6856, WSA8810, WSA8815, WSA8830, WSA8835

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Qualcomm · Snapdragonversion=AR8035, QCA6174A, QCA6390, QCA6391, QCA6574, QCA6574A, QCA6574AU, QCA6595AU, QCA6696, QCA8081, QCA8337, QCA9377, QCM2290, QCM4290, QCM6490, QCS2290, QCS4290, QCS6490, QRB5165, QRB5165M, QRB5165N, SA6145P, SA6150P, SA6155P, SA8145P, SA8150P, SA8155P, SA8195P, SD 8 Gen1 5G, SD460, SD480, SD662, SD690 5G, SD750G, SD765, SD765G, SD768G, SD778G, SD780G, SD865 5G, SD870, SD888, SD888 5G, SDX12, SDX55M, SDX65, SM6225, SM6375, SM7250P, SM7315, SM7325P, WCD9335, WCD9370, WCD9375, WCD9380, WCD9385, WCN3910, WCN3950, WCN3988, WCN3991, WCN3998, WCN6740, WCN6750, WCN6850, WCN6851, WCN6855, WCN6856, WSA8810, WSA8815, WSA8830, WSA8835

Published CVSS scores

8.4Qualcomm, Inc.CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-416Use After Free

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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