CVE-2021-35109

Address manipulation via unchecked range merging

Published Sep 2, 2022 · Updated Aug 4, 2024

Improper input validation in Qualcomm Snapdragon Connectivity and Snapdragon Mobile allows physically proximate attackers to manipulate addresses. While APP-S configures a resource group, its range-merging logic accepts manipulated address ranges originating from APP-NS. Physical proximity and no authentication are required; the public bulletin does not specify how the manipulated address changes device behavior.

CVSS severity6.8
Medium
EPSS probability0.20%
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 Connectivity and Snapdragon Mobile allows physically proximate attackers to manipulate addresses. While APP-S configures a resource group, its range-merging logic accepts manipulated address ranges originating from APP-NS. Physical proximity and no authentication are required; the public bulletin does not specify how the manipulated address changes device behavior.

The record

CVE
CVE-2021-35109
Published
Sep 2, 2022
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-20
Attack vector
physical
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 2, 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 vectorphysical
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.8NVDCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
6.8QualcommCVSS:3.1/AV:P/AC:L/PR:N/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)
Vectorphysical
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-20Improper Input Validation

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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