CVE-2021-45713Network attack vector

Process crash via overly permissive callback lifetime

Published Dec 26, 2021 · Updated Aug 4, 2024

Use-after-free in rusqlite 0.25.0 through 0.25.3 and 0.26.0 through 0.26.1 allows attackers to crash a consuming process. Connection::create_scalar_function accepts a callback closure with a lifetime tied only to a temporary connection borrow, so SQLite can invoke it after borrowed stack values have been dropped. A consuming application must enable the functions feature, register a non-static closure, and expose a path that later invokes the SQL function; the demonstrated consequence is a process crash.

CVSS severity7.5
High
EPSS probability1.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in rusqlite 0.25.0 through 0.25.3 and 0.26.0 through 0.26.1 allows attackers to crash a consuming process. Connection::create_scalar_function accepts a callback closure with a lifetime tied only to a temporary connection borrow, so SQLite can invoke it after borrowed stack values have been dropped. A consuming application must enable the functions feature, register a non-static closure, and expose a path that later invokes the SQL function; the demonstrated consequence is a process crash.

The record

CVE
CVE-2021-45713
Published
Dec 26, 2021
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-416
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 26, 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 vectornetwork
Required privilegesunauthenticated

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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-416Use After Free

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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