CVE-2021-30288

Memory corruption via oversized WLAN TLV copy

Published Oct 20, 2021 · Updated Aug 3, 2024

Stack-based buffer overflow in Qualcomm Snapdragon WLAN firmware allows local users to corrupt memory through a crafted TLV. A missing length check lets the firmware copy an oversized type-length-value field into a fixed-size local stack variable. Local delivery is required; successful exploitation corrupts stack memory and can compromise data or interrupt WLAN service.

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

Stack-based buffer overflow in Qualcomm Snapdragon WLAN firmware allows local users to corrupt memory through a crafted TLV. A missing length check lets the firmware copy an oversized type-length-value field into a fixed-size local stack variable. Local delivery is required; successful exploitation corrupts stack memory and can compromise data or interrupt WLAN service.

The record

CVE
CVE-2021-30288
Published
Oct 20, 2021
Updated
Aug 3, 2024
Vendor
Qualcomm
Product
Snapdragon
Classifications
CWE-121, CWE-787
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 20, 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=APQ8009, APQ8053, APQ8096AU, AQT1000, AR8031, AR8035, CSR8811, CSRA6620, CSRA6640, CSRB31024, IPQ5010, IPQ5018, IPQ5028, IPQ6000, IPQ6005, IPQ6010, IPQ6018, IPQ6028, IPQ8070, IPQ8070A, IPQ8071, IPQ8071A, IPQ8072, IPQ8072A, IPQ8074, IPQ8074A, IPQ8076, IPQ8076A, IPQ8078, IPQ8078A, IPQ8173, IPQ8174, MSM8996AU, PMP8074, QCA1023, QCA1062, QCA1064, QCA10901, QCA2062, QCA2064, QCA2065, QCA2066, QCA4010, QCA4020, QCA4024, QCA6174A, QCA6310, QCA6335, QCA6390, QCA6391, QCA6420, QCA6421, QCA6426, QCA6428, QCA6430, QCA6431, QCA6436, QCA6438, QCA6564AU, QCA6574, QCA6574A, QCA6574AU, QCA6584AU, QCA6595AU, QCA6694, QCA6696, QCA8072, QCA8075, QCA8081, QCA9369, QCA9377, QCA9379, QCA9888, QCA9889, QCA9984, QCM2290, QCM4290, QCM6125, QCM6490, QCN5021, QCN5022, QCN5024, QCN5052, QCN5054, QCN5064, QCN5121, QCN5122, QCN5124, QCN5152, QCN5154, QCN5164, QCN5550, QCN6023, QCN6024, QCN6122, QCN7605, QCN7606, QCN9000, QCN9022, QCN9024, QCN9070, QCN9072, QCN9074, QCN9100, QCS2290, QCS405, QCS410, QCS4290, QCS605, QCS610, ...[truncated*]

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Qualcomm · Snapdragonversion=APQ8009, APQ8053, APQ8096AU, AQT1000, AR8031, AR8035, CSR8811, CSRA6620, CSRA6640, CSRB31024, IPQ5010, IPQ5018, IPQ5028, IPQ6000, IPQ6005, IPQ6010, IPQ6018, IPQ6028, IPQ8070, IPQ8070A, IPQ8071, IPQ8071A, IPQ8072, IPQ8072A, IPQ8074, IPQ8074A, IPQ8076, IPQ8076A, IPQ8078, IPQ8078A, IPQ8173, IPQ8174, MSM8996AU, PMP8074, QCA1023, QCA1062, QCA1064, QCA10901, QCA2062, QCA2064, QCA2065, QCA2066, QCA4010, QCA4020, QCA4024, QCA6174A, QCA6310, QCA6335, QCA6390, QCA6391, QCA6420, QCA6421, QCA6426, QCA6428, QCA6430, QCA6431, QCA6436, QCA6438, QCA6564AU, QCA6574, QCA6574A, QCA6574AU, QCA6584AU, QCA6595AU, QCA6694, QCA6696, QCA8072, QCA8075, QCA8081, QCA9369, QCA9377, QCA9379, QCA9888, QCA9889, QCA9984, QCM2290, QCM4290, QCM6125, QCM6490, QCN5021, QCN5022, QCN5024, QCN5052, QCN5054, QCN5064, QCN5121, QCN5122, QCN5124, QCN5152, QCN5154, QCN5164, QCN5550, QCN6023, QCN6024, QCN6122, QCN7605, QCN7606, QCN9000, QCN9022, QCN9024, QCN9070, QCN9072, QCN9074, QCN9100, QCS2290, QCS405, QCS410, QCS4290, QCS605, QCS610, ...[truncated*]

Published CVSS scores

8.4QualcommCVSS: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.

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-121Stack-based Buffer Overflow
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

See the directory against your own environment.

Your stack

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