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CVE-2026-9500— GNU LibreDWG Dwgread Utility decode.c read_2004_compressed_section heap-based overflow

Quick assessment

Affected
GNU LibreDWG
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

GNU LibreDWG是美国GNU社区的一个用于处理DWG文件的C语言库。 GNU LibreDWG 0.14版本及之前版本存在安全漏洞，该漏洞源于Dwgread Utility组件中src/decode.c文件的read_2004_compressed_section函数存在堆缓冲区溢出，可能导致本地攻击者利用该漏洞。

CVSS 5.3 · Medium EPSS 0.17% · P6

Affected Version Matrix 14

VendorProduct Version RangeStatus
GNU LibreDWG 0.1 affected
0.2 affected
0.3 affected
0.4 affected
0.5 affected
0.6 affected
0.7 affected
0.8 affected
… +6 more rows
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I. Basic Information for CVE-2026-9500

Vulnerability Information
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Vulnerability Title
GNU LibreDWG Dwgread Utility decode.c read_2004_compressed_section heap-based overflow
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was found in GNU LibreDWG up to 0.14. The affected element is the function read_2004_compressed_section of the file src/decode.c of the component Dwgread Utility. Performing a manipulation results in heap-based buffer overflow. The attack is only possible with local access. The exploit has been made public and could be used. The project was informed of the problem early through an issue report but has not responded yet.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
堆缓冲区溢出
Source: CVE Program / CVE List V5
Vulnerability Title
GNU LibreDWG 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
GNU LibreDWG是美国GNU社区的一个用于处理DWG文件的C语言库。 GNU LibreDWG 0.14版本及之前版本存在安全漏洞，该漏洞源于Dwgread Utility组件中src/decode.c文件的read_2004_compressed_section函数存在堆缓冲区溢出，可能导致本地攻击者利用该漏洞。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
GNU LibreDWG 0.1 cpe:2.3:a:gnu:libredwg:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-9500

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III. Intelligence Information for CVE-2026-9500

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Vendor Advisories for CVE-2026-9500 (1)

Vendor Pages for CVE-2026-9500 (1)

Other References for CVE-2026-9500 (2)

Same Patch Batch · GNU · 2026-05-25 · 5 CVEs total

CVE-2026-9502 5.3 MEDIUM GNU LibreDWG Dwgread Utility decode.c decompress_R2004_section heap-based overflow
CVE-2026-9501 3.3 LOW GNU LibreDWG Dwgread Utility decode.c decompress_R2004_section assertion
CVE-2026-9503 3.3 LOW GNU LibreDWG DWG File decode.c dwg_next_entity null pointer dereference
CVE-2026-9504 3.3 LOW GNU LibreDWG Dwggrep Utility dwggrep.c bit_convert_TU out-of-bounds

IV. Related Vulnerabilities

Same product: LibreDWG
Same vendor: GNU
Same weakness: CWE-122

V. Comments for CVE-2026-9500

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