CVE-2026-9500Public exploit

Local crash via unchecked compressed-section length

Published May 25, 2026 · Updated May 25, 2026

Heap-based buffer overflow in LibreDWG 0.1 through 0.14 allows local users to crash dwgread with a malformed R2004 DWG file. In read_2004_compressed_section, insufficient decoded-length validation lets memcpy write beyond a preallocated heap buffer. Exploitation requires a local user to invoke dwgread on the crafted file; only a segmentation-fault crash has been demonstrated, not code execution.

CVSS severityUnavailable
Unscored
EPSS probability0.12%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

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Summary

What happened

Heap-based buffer overflow in LibreDWG 0.1 through 0.14 allows local users to crash dwgread with a malformed R2004 DWG file. In read_2004_compressed_section, insufficient decoded-length validation lets memcpy write beyond a preallocated heap buffer. Exploitation requires a local user to invoke dwgread on the crafted file; only a segmentation-fault crash has been demonstrated, not code execution.

The record

CVE
CVE-2026-9500
Published
May 25, 2026
Updated
May 25, 2026
Vendor
The GnuPG Project
Product
LibreDWG
Classifications
CWE-119, CWE-122, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 25, 2026CVE publishedPublication date reported by the CVE source.
  2. May 25, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

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

4.8VulDB CNACVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
4.3VulDB CNAAV:L/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR
5.3VulDB CNACVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
5.3VulDB CNACVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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-119Memory Corruption
CWE-122Heap-based Buffer Overflow
T1499.004Application 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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