CVE-2021-30345

Protected-resource disclosure via misconfigured SMMU stream

Published Jun 14, 2022 · Updated Aug 3, 2024

Kernel configuration flaw in Qualcomm Snapdragon chipsets allows local users to read protected resources through RPM Secure Stream. The SMMU configuration fails to restrict the RPM secure stream, allowing it to address secure resources outside its intended memory domain. Low-privileged local access is required; exploitation crosses a security boundary and exposes confidential data without changing it or interrupting service.

CVSS severity6.5
Medium
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

Kernel configuration flaw in Qualcomm Snapdragon chipsets allows local users to read protected resources through RPM Secure Stream. The SMMU configuration fails to restrict the RPM secure stream, allowing it to address secure resources outside its intended memory domain. Low-privileged local access is required; exploitation crosses a security boundary and exposes confidential data without changing it or interrupting service.

The record

CVE
CVE-2021-30345
Published
Jun 14, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
T1005
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 14, 2022CVE 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 privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.5NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
4.9NVDAV:L/AC:L/Au:N/C:C/I:N/A:N
6.5Qualcomm, Inc.CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

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

T1005Data from Local System

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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