CVE-2026-9529Public exploit

Local dwggrep crash via malformed DWG

Published May 26, 2026 · Updated May 26, 2026

Null pointer dereference in GNU LibreDWG 0.14 and earlier allows local users to crash dwggrep with a malformed DWG file. In programs/dwggrep.c, match_BLOCK_HEADER reads through a null pointer while matching BLOCK_HEADER objects from the malformed file. The user must invoke the local command on attacker-controlled file content; the demonstrated consequence is termination of that dwggrep process.

CVSS severityUnavailable
Unscored
EPSS probability0.14%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Null pointer dereference in GNU LibreDWG 0.14 and earlier allows local users to crash dwggrep with a malformed DWG file. In programs/dwggrep.c, match_BLOCK_HEADER reads through a null pointer while matching BLOCK_HEADER objects from the malformed file. The user must invoke the local command on attacker-controlled file content; the demonstrated consequence is termination of that dwggrep process.

The record

CVE
CVE-2026-9529
Published
May 26, 2026
Updated
May 26, 2026
Vendor
The GnuPG Project
Product
LibreDWG
Classifications
CWE-404, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 26, 2026CVE publishedPublication date reported by the CVE source.
  2. May 26, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0.1
  2. Affected versionversion=0.10
  3. Affected versionversion=0.11
  4. Affected versionversion=0.12
  5. Affected versionversion=0.13
  6. Affected versionversion=0.14
  7. Affected versionversion=0.2
  8. Affected versionversion=0.3
  9. Affected versionversion=0.4
  10. Affected versionversion=0.5
  11. Affected versionversion=0.6
  12. Affected versionversion=0.7
  13. Affected versionversion=0.8
  14. Affected versionversion=0.9

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The GnuPG Project · LibreDWGversion=0.1; version=0.10; version=0.11; version=0.12; version=0.13; version=0.14; version=0.2; version=0.3; version=0.4; version=0.5; version=0.6; version=0.7; version=0.8; version=0.9

Published CVSS scores

1.9GitHub Advisory DatabaseCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E: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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-404Improper Resource Shutdown or Release
T1499.004Endpoint Denial of Service: Application or System Exploitation

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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