CVE-2021-30266

Memory corruption via WLAN interface initialization

Published Nov 12, 2021 · Updated Aug 3, 2024

Use-after-free in Qualcomm Snapdragon WLAN firmware allows local users with high privileges to corrupt memory through an Interface add command. The WLAN new-interface path improperly validates memory while processing Interface add, leaving freed storage available for later access. Exploitation requires local, high-privilege access and can expose or alter data or interrupt affected firmware; Qualcomm has not disclosed the affected function.

CVSS severity6.7
Medium
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in Qualcomm Snapdragon WLAN firmware allows local users with high privileges to corrupt memory through an Interface add command. The WLAN new-interface path improperly validates memory while processing Interface add, leaving freed storage available for later access. Exploitation requires local, high-privilege access and can expose or alter data or interrupt affected firmware; Qualcomm has not disclosed the affected function.

The record

CVE
CVE-2021-30266
Published
Nov 12, 2021
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-416
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Nov 12, 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

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

4.6NIST NVDAV:L/AC:L/Au:N/C:P/I:P/A:P
6.7Qualcomm, Inc.CVSS:3.1/AV:L/AC:L/PR:H/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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-416Use After Free

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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