CVE-2021-45346Public exploit

Database record disclosure via oversized length fields

Published Feb 14, 2022 · Updated Aug 4, 2024

Record overread in SQLite 3.35.1 and 3.37.0 allows local users to read adjacent database records through a corrupted database file. Altered record and string-length fields cause SQLite to trust oversized lengths and return bytes from the following record. The technique requires direct read-write access to the database file, grants no access beyond data already available with those privileges, and SQLite disputes that it is a vulnerability.

CVSS severity4.3
Medium
EPSS probability1.61%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Record overread in SQLite 3.35.1 and 3.37.0 allows local users to read adjacent database records through a corrupted database file. Altered record and string-length fields cause SQLite to trust oversized lengths and return bytes from the following record. The technique requires direct read-write access to the database file, grants no access beyond data already available with those privileges, and SQLite disputes that it is a vulnerability.

The record

CVE
CVE-2021-45346
Published
Feb 14, 2022
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-401
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Feb 14, 2022CVE 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

4.0NIST NVDAV:N/AC:L/Au:S/C:P/I:N/A:N
4.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-401Missing Release of Memory after Effective Lifetime

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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