CVE-2020-36210

Memory corruption via partially uninitialized array drop

Published Jan 22, 2021 · Updated Aug 4, 2024

Memory corruption in the autorand crate before 0.2.3 allows local users to trigger undefined behavior through a panicking Random implementation. The array Random implementation allocates an uninitialized array and drops partially initialized elements if user-defined T::random() panics. Exploitation requires code that invokes Random for arrays with an attacker-controlled implementation; the invalid drop can corrupt memory or crash the process.

CVSS severity7.8
High
EPSS probability0.43%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory corruption in the autorand crate before 0.2.3 allows local users to trigger undefined behavior through a panicking Random implementation. The array Random implementation allocates an uninitialized array and drops partially initialized elements if user-defined T::random() panics. Exploitation requires code that invokes Random for arrays with an attacker-controlled implementation; the invalid drop can corrupt memory or crash the process.

The record

CVE
CVE-2020-36210
Published
Jan 22, 2021
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-787, CWE-908
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Jan 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 privilegesUnavailable in this record.

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

4.6NIST NVDAV:L/AC:L/Au:N/C:P/I:P/A:P
7.8RustSecCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.8NIST NVDCVSS: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
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write
CWE-908Use of Uninitialized Resource

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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