CVE-2021-35081Network attack vector

Memory corruption via unvalidated IBSS SSID length

Published Jun 14, 2022 · Updated Aug 4, 2024

A WLAN buffer overflow in Qualcomm Snapdragon allows remote attackers to corrupt memory through crafted SSIDs in IBSS beacon or probe responses. During an IBSS session, the WLAN component trusts the received SSID length before copying the field into a fixed-size buffer. No authentication or user interaction is required, but the target must receive the malicious wireless management frame; Qualcomm does not disclose the precise function or buffer.

CVSS severity9.8
Critical
EPSS probability0.81%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A WLAN buffer overflow in Qualcomm Snapdragon allows remote attackers to corrupt memory through crafted SSIDs in IBSS beacon or probe responses. During an IBSS session, the WLAN component trusts the received SSID length before copying the field into a fixed-size buffer. No authentication or user interaction is required, but the target must receive the malicious wireless management frame; Qualcomm does not disclose the precise function or buffer.

The record

CVE
CVE-2021-35081
Published
Jun 14, 2022
Updated
Aug 4, 2024
Vendor
Qualcomm
Product
Snapdragon
Classifications
CWE-120
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 14, 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=AQT1000, AR8035, QCA6390, QCA6391, QCA6564, QCA6564AU, QCA6574A, QCA8081, QCA8337, QCM2290, QCM4290, QCM6125, QCM6490, QCN7605, QCN7606, QCS2290, QCS4290, QCS610, QCS6125, QCS6490, QRB5165, QRB5165M, QRB5165N, SA6145P, SA6150P, SA6155P, SA8145P, SA8150P, SA8155P, SA8195P, SD460, SD480, SD662, SD690 5G, SD750G, SD765, SD765G, SD768G, SD778G, SD780G, SD855, SD865 5G, SD870, SD888 5G, SDX55, SDX55M, SDX65, SDXR1, SM6375, SM7250P, SM7325P, WCD9326, WCD9341, WCD9370, WCD9375, WCD9380, WCD9385, WCN3910, WCN3950, WCN3980, WCN3988, WCN3991, WCN3998, WCN6740, WCN6750, WCN6850, WCN6851, WCN6855, WCN6856, WSA8810, WSA8815, WSA8830, WSA8835

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Qualcomm · Snapdragonversion=AQT1000, AR8035, QCA6390, QCA6391, QCA6564, QCA6564AU, QCA6574A, QCA8081, QCA8337, QCM2290, QCM4290, QCM6125, QCM6490, QCN7605, QCN7606, QCS2290, QCS4290, QCS610, QCS6125, QCS6490, QRB5165, QRB5165M, QRB5165N, SA6145P, SA6150P, SA6155P, SA8145P, SA8150P, SA8155P, SA8195P, SD460, SD480, SD662, SD690 5G, SD750G, SD765, SD765G, SD768G, SD778G, SD780G, SD855, SD865 5G, SD870, SD888 5G, SDX55, SDX55M, SDX65, SDXR1, SM6375, SM7250P, SM7325P, WCD9326, WCD9341, WCD9370, WCD9375, WCD9380, WCD9385, WCN3910, WCN3950, WCN3980, WCN3988, WCN3991, WCN3998, WCN6740, WCN6750, WCN6850, WCN6851, WCN6855, WCN6856, WSA8810, WSA8815, WSA8830, WSA8835

Published CVSS scores

9.8Qualcomm, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
10.0NIST NVDAV:N/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)
Vectornetwork
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.

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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