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CVE-2026-9605— GNU libredwg Dwgbmp Utility bits.c bit_read_RC heap-based overflow

Quick assessment

Affected
GNU libredwg
Exploitation
Public or AI PoC available; prioritize validation
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 0.13.4.8160及之前版本存在安全漏洞，该漏洞源于Dwgbmp Utility组件bits.c文件中bit_read_RC函数存在堆缓冲区溢出，可能导致远程攻击。

CVSS 7.3 · High EPSS 0.57% · P45

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
GNU libredwg 0.13.4.8160 affected
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I. Basic Information for CVE-2026-9605

Vulnerability Information
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Vulnerability Title
GNU libredwg Dwgbmp Utility bits.c bit_read_RC heap-based overflow
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw has been found in GNU libredwg up to 0.13.4.8160. This issue affects the function bit_read_RC of the file bits.c of the component Dwgbmp Utility. This manipulation causes heap-based buffer overflow. The attack is possible to be carried out remotely. The exploit has been published and may be used. Patch name: 8f03865f37f5d4ffd616fef802acc980be54d300. Applying a patch is the recommended action to fix this issue.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/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 0.13.4.8160及之前版本存在安全漏洞，该漏洞源于Dwgbmp Utility组件bits.c文件中bit_read_RC函数存在堆缓冲区溢出，可能导致远程攻击。
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 0.13.4.8160 cpe:2.3:a:gnu:libredwg:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-9605

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 8970 chars
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III. Intelligence Information for CVE-2026-9605

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Patches & Fixes for CVE-2026-9605 (1)

Proof of Concept for CVE-2026-9605 (1)

Vendor Pages for CVE-2026-9605 (1)

Other References for CVE-2026-9605 (1)

Same Patch Batch · GNU · 2026-05-26 · 3 CVEs total

CVE-2026-9530 3.3 LOW GNU LibreDWG Dwgbmp Utility decode.c read_2004_compressed_section out-of-bounds
CVE-2026-9529 3.3 LOW GNU LibreDWG Dwggrep Utility dwggrep.c match_BLOCK_HEADER null pointer dereference

IV. Related Vulnerabilities

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

V. Comments for CVE-2026-9605

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