CVE-2021-36690Public exploit

Process crash via null pointer dereference

Published Aug 24, 2021 · Updated Nov 3, 2025

Denial of service in the SQLite 3.36.0 command-line shell allows local users to crash the process via crafted SQL passed to .expert. In the experimental Expert extension, idxGetTableInfo invokes strlen on a null value while building table information. The user must already be able to execute arbitrary SQL in the CLI, and the defect does not affect the core SQLite library or standard application builds.

CVSS severity7.5
High
EPSS probability3.90%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in the SQLite 3.36.0 command-line shell allows local users to crash the process via crafted SQL passed to .expert. In the experimental Expert extension, idxGetTableInfo invokes strlen on a null value while building table information. The user must already be able to execute arbitrary SQL in the CLI, and the defect does not affect the core SQLite library or standard application builds.

The record

CVE
CVE-2021-36690
Published
Aug 24, 2021
Updated
Nov 3, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
Unavailable
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 24, 2021CVE publishedPublication date reported by the CVE source.
  2. Nov 3, 2025Record 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

5.0NIST NVDAV:N/AC:L/Au:N/C:N/I:N/A:P
7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/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.

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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 exploitPublished

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

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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