CVE-2020-11198

Key material exposure via improper memset wipe

Published Feb 22, 2021 · Updated Aug 4, 2024

Information exposure in Qualcomm Snapdragon platforms allows local users to recover TZ diagnostic encryption key material via residual log buffers. The TZ diagnostic buffer cleanup uses memset incorrectly, leaving encryption keys and other log-buffer data in memory instead of securely wiping them. Exploitation requires local privileged access to the affected firmware and can disclose sensitive key material; the record does not establish remote reachability or service disruption.

CVSS severity6.7
Medium
EPSS probability0.12%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information exposure in Qualcomm Snapdragon platforms allows local users to recover TZ diagnostic encryption key material via residual log buffers. The TZ diagnostic buffer cleanup uses memset incorrectly, leaving encryption keys and other log-buffer data in memory instead of securely wiping them. Exploitation requires local privileged access to the affected firmware and can disclose sensitive key material; the record does not establish remote reachability or service disruption.

The record

CVE
CVE-2020-11198
Published
Feb 22, 2021
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-200
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Feb 22, 2021CVE 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 privilegesadmin

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.7NVDCVSS: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-200Information Exposure

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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