CVE-2021-35069

Memory corruption via unchecked DMA length

Published Feb 11, 2022 · Updated Aug 4, 2024

Improper input validation in Qualcomm Snapdragon platforms allows local users to cause memory corruption via crafted DMA buffer lengths. The WLAN component accepts DMA data whose reported length is not properly validated before processing, allowing an out-of-bounds memory operation. Exploitation requires low local privileges and no user interaction; Qualcomm and Android identify the issue as affecting numerous Snapdragon chipsets, with potential confidentiality, integrity, and availability impact.

CVSS severity7.8
High
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

Improper input validation in Qualcomm Snapdragon platforms allows local users to cause memory corruption via crafted DMA buffer lengths. The WLAN component accepts DMA data whose reported length is not properly validated before processing, allowing an out-of-bounds memory operation. Exploitation requires low local privileges and no user interaction; Qualcomm and Android identify the issue as affecting numerous Snapdragon chipsets, with potential confidentiality, integrity, and availability impact.

The record

CVE
CVE-2021-35069
Published
Feb 11, 2022
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-190
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 11, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.8Qualcomm, Inc.CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.2NVDAV:L/AC:L/Au:N/C:C/I:C/A:C
7.8NVDCVSS: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.

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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
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.

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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