CVE-2021-30295

Local memory corruption via unchecked task storage

Published Sep 9, 2021 · Updated Aug 3, 2024

Heap overflow in Qualcomm Snapdragon DSP Services allows local users to corrupt memory while storing current task information. DSP Services fails to validate an undisclosed local variable before copying task information into heap storage. Local execution on an affected device is required; Qualcomm has not disclosed whether the corruption causes a crash, code execution, or another effect.

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

What happened

Heap overflow in Qualcomm Snapdragon DSP Services allows local users to corrupt memory while storing current task information. DSP Services fails to validate an undisclosed local variable before copying task information into heap storage. Local execution on an affected device is required; Qualcomm has not disclosed whether the corruption causes a crash, code execution, or another effect.

The record

CVE
CVE-2021-30295
Published
Sep 9, 2021
Updated
Aug 3, 2024
Vendor
Qualcomm
Product
Snapdragon
Classifications
CWE-120
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 9, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 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=APQ8017, APQ8053, AQT1000, AR8031, CSRA6620, CSRA6640, CSRB31024, FSM10055, FSM10056, MDM9150, MSM8917, MSM8953, QCA6174A, QCA6390, QCA6391, QCA6420, QCA6426, QCA6430, QCA6564AU, QCA6574, QCA6574A, QCA6574AU, QCA6584AU, QCA6595, QCA6595AU, QCA6696, QCA9377, QCM2290, QCM4290, QCM6490, QCS2290, QCS405, QCS410, QCS4290, QCS603, QCS605, QCS610, QCS6490, QCX315, QRB5165, Qualcomm215, SA415M, SA515M, SA6145P, SA6150P, SA6155, SA6155P, SA8145P, SA8150P, SA8155, SA8155P, SA8195P, SD 675, SD205, SD210, SD429, SD439, SD460, SD480, SD632, SD660, SD662, SD665, SD670, SD675, SD678, SD690 5G, SD710, SD720G, SD730, SD750G, SD765, SD765G, SD768G, SD778G, SD780G, SD845, SD855, SD865 5G, SD870, SD888, SD888 5G, SDA429W, SDM429W, SDX12, SDX50M, SDX55, SDX55M, SM4125, SM6250, SM7250P, SM7315, SM7325P, WCD9326, WCD9335, WCD9340, WCD9341, WCD9360, WCD9370, WCD9375, WCD9380, WCD9385, WCN3610, WCN3615, WCN3620, WCN3660B, WCN3680, WCN3680B, WCN3910, WCN3950, WCN3980, WCN3988, WCN3990, WCN3991, WCN3998, WCN6740, WCN675 ...[truncated*]

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Qualcomm · Snapdragonversion=APQ8017, APQ8053, AQT1000, AR8031, CSRA6620, CSRA6640, CSRB31024, FSM10055, FSM10056, MDM9150, MSM8917, MSM8953, QCA6174A, QCA6390, QCA6391, QCA6420, QCA6426, QCA6430, QCA6564AU, QCA6574, QCA6574A, QCA6574AU, QCA6584AU, QCA6595, QCA6595AU, QCA6696, QCA9377, QCM2290, QCM4290, QCM6490, QCS2290, QCS405, QCS410, QCS4290, QCS603, QCS605, QCS610, QCS6490, QCX315, QRB5165, Qualcomm215, SA415M, SA515M, SA6145P, SA6150P, SA6155, SA6155P, SA8145P, SA8150P, SA8155, SA8155P, SA8195P, SD 675, SD205, SD210, SD429, SD439, SD460, SD480, SD632, SD660, SD662, SD665, SD670, SD675, SD678, SD690 5G, SD710, SD720G, SD730, SD750G, SD765, SD765G, SD768G, SD778G, SD780G, SD845, SD855, SD865 5G, SD870, SD888, SD888 5G, SDA429W, SDM429W, SDX12, SDX50M, SDX55, SDX55M, SM4125, SM6250, SM7250P, SM7315, SM7325P, WCD9326, WCD9335, WCD9340, WCD9341, WCD9360, WCD9370, WCD9375, WCD9380, WCD9385, WCN3610, WCN3615, WCN3620, WCN3660B, WCN3680, WCN3680B, WCN3910, WCN3950, WCN3980, WCN3988, WCN3990, WCN3991, WCN3998, WCN6740, WCN675 ...[truncated*]

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.

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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-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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