CVE-2020-3664

Memory disclosure and device crash via invalid addresses

Published Feb 22, 2021 · Updated Aug 4, 2024

Out-of-bounds read in the Qualcomm Snapdragon hypervisor allows local users with high privileges to disclose memory or crash a device. The hypervisor attempts to read attacker-supplied invalid addresses without validating that the referenced memory is within bounds. Exploitation requires local high-privilege access; successful use can expose hypervisor memory or interrupt the device through a crash.

CVSS severity6.0
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

Out-of-bounds read in the Qualcomm Snapdragon hypervisor allows local users with high privileges to disclose memory or crash a device. The hypervisor attempts to read attacker-supplied invalid addresses without validating that the referenced memory is within bounds. Exploitation requires local high-privilege access; successful use can expose hypervisor memory or interrupt the device through a crash.

The record

CVE
CVE-2020-3664
Published
Feb 22, 2021
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-125
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

3.6NIST National Vulnerability DatabaseAV:L/AC:L/Au:N/C:P/I:N/A:P
6.0NIST National Vulnerability DatabaseCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-125Out-of-bounds Read

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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