CVE-2021-1942

Memory corruption via shared-memory permission mishandling

Published Apr 1, 2022 · Updated Aug 3, 2024

Memory corruption in Qualcomm Snapdragon chipsets allows local users to compromise memory through a shared-memory permission flaw. The closed-source Core component mishandles permissions on a shared memory region; Qualcomm has not disclosed the specific code path or operation. Local access is required, and successful exploitation crosses a security boundary with confidentiality, integrity, and availability consequences.

CVSS severity9.3
Critical
EPSS probability0.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory corruption in Qualcomm Snapdragon chipsets allows local users to compromise memory through a shared-memory permission flaw. The closed-source Core component mishandles permissions on a shared memory region; Qualcomm has not disclosed the specific code path or operation. Local access is required, and successful exploitation crosses a security boundary with confidentiality, integrity, and availability consequences.

The record

CVE
CVE-2021-1942
Published
Apr 1, 2022
Updated
Aug 3, 2024
Vendor
Qualcomm
Product
Snapdragon
Classifications
CWE-787
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 1, 2022CVE 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=AQT1000, AR8031, AR8035, CSRA6620, CSRA6640, FSM10055, FSM10056, MDM9150, QCA6390, QCA6391, QCA6420, QCA6426, QCA6430, QCA6436, QCA6564, QCA6564A, QCA6564AU, QCA6574, QCA6574A, QCA6574AU, QCA6595AU, QCA6696, QCA8337, QCA9984, QCM2290, QCM4290, QCM6490, QCN9011, QCN9012, QCS2290, QCS405, QCS410, QCS4290, QCS610, QCS6490, QCX315, QRB5165, QRB5165M, QRB5165N, QSM8250, SA4150P, SA4155P, SA415M, SA515M, SA6145P, SA6150P, SA6155, SA6155P, SA8145P, SA8150P, SA8155, SA8155P, SA8195P, SD 675, SD 8cx Gen2, SD 8cx Gen3, SD460, SD480, SD662, SD675, SD678, SD690 5G, SD720G, SD730, SD750G, SD765, SD765G, SD768G, SD778G, SD7c, SD855, SD865 5G, SD870, SD888 5G, SDX55, SDX55M, SDX57M, SDXR2 5G, SM6225, SM6250, SM6250P, SM6375, SM7250P, SM7325P, SW5100, SW5100P, SXR2150P, WCD9335, WCD9340, WCD9341, WCD9360, WCD9370, WCD9375, WCD9380, WCD9385, WCN3910, WCN3950, WCN3980, WCN3988, WCN3991, WCN3998, WCN3999, WCN6750, WCN6850, WCN6851, WCN6855, WCN6856, WSA8810, WSA8815, WSA8830, WSA8835

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Qualcomm · Snapdragonversion=AQT1000, AR8031, AR8035, CSRA6620, CSRA6640, FSM10055, FSM10056, MDM9150, QCA6390, QCA6391, QCA6420, QCA6426, QCA6430, QCA6436, QCA6564, QCA6564A, QCA6564AU, QCA6574, QCA6574A, QCA6574AU, QCA6595AU, QCA6696, QCA8337, QCA9984, QCM2290, QCM4290, QCM6490, QCN9011, QCN9012, QCS2290, QCS405, QCS410, QCS4290, QCS610, QCS6490, QCX315, QRB5165, QRB5165M, QRB5165N, QSM8250, SA4150P, SA4155P, SA415M, SA515M, SA6145P, SA6150P, SA6155, SA6155P, SA8145P, SA8150P, SA8155, SA8155P, SA8195P, SD 675, SD 8cx Gen2, SD 8cx Gen3, SD460, SD480, SD662, SD675, SD678, SD690 5G, SD720G, SD730, SD750G, SD765, SD765G, SD768G, SD778G, SD7c, SD855, SD865 5G, SD870, SD888 5G, SDX55, SDX55M, SDX57M, SDXR2 5G, SM6225, SM6250, SM6250P, SM6375, SM7250P, SM7325P, SW5100, SW5100P, SXR2150P, WCD9335, WCD9340, WCD9341, WCD9360, WCD9370, WCD9375, WCD9380, WCD9385, WCN3910, WCN3950, WCN3980, WCN3988, WCN3991, WCN3998, WCN3999, WCN6750, WCN6850, WCN6851, WCN6855, WCN6856, WSA8810, WSA8815, WSA8830, WSA8835

Published CVSS scores

8.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
7.2NIST NVDAV:L/AC:L/Au:N/C:C/I:C/A:C
9.3Qualcomm, Inc.CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/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-787Out-of-bounds Write

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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