CVE-2021-30319

Integer overflow via unchecked WMI command length

Published Jan 13, 2022 · Updated Aug 3, 2024

Integer overflow in Qualcomm Snapdragon WLAN Host code allows local users to trigger an overflow with a crafted WMI command. The WLAN Host command path processes WMI command-length parameters without sufficient validation, allowing the length calculation to wrap. Local low-privileged access is required, and Qualcomm has not published the affected function, resulting memory operation, or concrete post-overflow consequence.

CVSS severity7.8
High
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

Integer overflow in Qualcomm Snapdragon WLAN Host code allows local users to trigger an overflow with a crafted WMI command. The WLAN Host command path processes WMI command-length parameters without sufficient validation, allowing the length calculation to wrap. Local low-privileged access is required, and Qualcomm has not published the affected function, resulting memory operation, or concrete post-overflow consequence.

The record

CVE
CVE-2021-30319
Published
Jan 13, 2022
Updated
Aug 3, 2024
Vendor
Qualcomm
Product
Snapdragon
Classifications
CWE-190
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 13, 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=APQ8009, APQ8017, APQ8064AU, APQ8096AU, AQT1000, AR8031, AR8035, CSRA6620, CSRA6640, CSRB31024, FSM10055, FSM10056, MDM9150, MDM9206, MDM9250, MDM9607, MDM9628, MDM9640, MDM9650, MSM8996AU, QCA6174A, QCA6175A, QCA6390, QCA6391, QCA6426, QCA6436, QCA6564, QCA6564A, QCA6564AU, QCA6574, QCA6574A, QCA6574AU, QCA6584, QCA6584AU, QCA6595AU, QCA6696, QCA8081, QCA8337, QCA9367, QCA9377, QCA9379, QCM2290, QCM4290, QCM6490, QCS2290, QCS405, QCS410, QCS4290, QCS603, QCS605, QCS610, QCS6490, QCX315, QRB5165, QRB5165N, SA415M, SA515M, SA6145P, SA6150P, SA6155, SA6155P, SA8145P, SA8150P, SA8155, SA8155P, SA8195P, SD 675, SD 8 Gen1 5G, SD460, SD480, SD662, SD665, SD675, SD678, SD690 5G, SD720G, SD730, SD750G, SD765, SD765G, SD768G, SD778G, SD780G, SD845, SD855, SD865 5G, SD870, SD888, SD888 5G, SDX12, SDX20, SDX24, SDX55, SDX55M, SDX65, SDXR1, SDXR2 5G, SM6225, SM6250, SM6250P, SM6375, SM7250P, SM7315, SM7325P, WCD9326, WCD9330, WCD9335, WCD9340, WCD9341, WCD9360, WCD9370, WCD9375, WCD9380, WCD9385, WCN3610, ...[truncated*]

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Qualcomm · Snapdragonversion=APQ8009, APQ8017, APQ8064AU, APQ8096AU, AQT1000, AR8031, AR8035, CSRA6620, CSRA6640, CSRB31024, FSM10055, FSM10056, MDM9150, MDM9206, MDM9250, MDM9607, MDM9628, MDM9640, MDM9650, MSM8996AU, QCA6174A, QCA6175A, QCA6390, QCA6391, QCA6426, QCA6436, QCA6564, QCA6564A, QCA6564AU, QCA6574, QCA6574A, QCA6574AU, QCA6584, QCA6584AU, QCA6595AU, QCA6696, QCA8081, QCA8337, QCA9367, QCA9377, QCA9379, QCM2290, QCM4290, QCM6490, QCS2290, QCS405, QCS410, QCS4290, QCS603, QCS605, QCS610, QCS6490, QCX315, QRB5165, QRB5165N, SA415M, SA515M, SA6145P, SA6150P, SA6155, SA6155P, SA8145P, SA8150P, SA8155, SA8155P, SA8195P, SD 675, SD 8 Gen1 5G, SD460, SD480, SD662, SD665, SD675, SD678, SD690 5G, SD720G, SD730, SD750G, SD765, SD765G, SD768G, SD778G, SD780G, SD845, SD855, SD865 5G, SD870, SD888, SD888 5G, SDX12, SDX20, SDX24, SDX55, SDX55M, SDX65, SDXR1, SDXR2 5G, SM6225, SM6250, SM6250P, SM6375, SM7250P, SM7315, SM7325P, WCD9326, WCD9330, WCD9335, WCD9340, WCD9341, WCD9360, WCD9370, WCD9375, WCD9380, WCD9385, WCN3610, ...[truncated*]

Published CVSS scores

7.8QualcommCVSS:3.1/AV:L/AC:L/PR:L/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-190Integer Overflow or Wraparound

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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