CVE-2022-33033Public exploit

Application crash via double-free in dwg_read_file

Published Jun 22, 2022 · Updated Aug 3, 2024

Double free in GNU LibreDWG 0.12.4.4608 allows local users to crash an application by opening a crafted DWG file. In dwg_read_file in src/dwg.c, the error path releases a buffer allocated by dat_read_file a second time while parsing malformed input. The observed abort requires an application to process the supplied file, and the public evidence demonstrates a crash rather than code execution.

CVSS severity7.8
High
EPSS probability0.75%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Double free in GNU LibreDWG 0.12.4.4608 allows local users to crash an application by opening a crafted DWG file. In dwg_read_file in src/dwg.c, the error path releases a buffer allocated by dat_read_file a second time while parsing malformed input. The observed abort requires an application to process the supplied file, and the public evidence demonstrates a crash rather than code execution.

The record

CVE
CVE-2022-33033
Published
Jun 22, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-415, T1203
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 22, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 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 privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
6.8NIST NVDAV:N/AC:M/Au:N/C:P/I:P/A:P

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-415Double Free
T1203Exploitation for Client Execution

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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