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CVE-2026-15520— GNU LibreDWG R2004 Section Decompression decode.c decompress_R2004_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基金会开源的一个DWG文件格式实现。 GNU LibreDWG 0.13.4-154-g0b573035版本存在缓冲区错误漏洞，该漏洞源于R2004 Section Decompression组件中的decompress_R2004_section函数存在堆缓冲区溢出，可能导致攻击者进行操纵。

CVSS 5.3 · Medium EPSS 0.19% · P9

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 2

VendorProduct Version RangeStatus
GNU LibreDWG 0.13.4-154-g0b573035 affected
0.14.8396 unaffected
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I. Basic Information for CVE-2026-15520

Vulnerability Information
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Vulnerability Title
GNU LibreDWG R2004 Section Decompression decode.c decompress_R2004_section heap-based overflow
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was determined in GNU LibreDWG 0.13.4-154-g0b573035. This impacts the function decompress_R2004_section of the file src/decode.c of the component R2004 Section Decompression. Executing a manipulation can lead to heap-based buffer overflow. The attack requires local access. The exploit has been publicly disclosed and may be utilized. Upgrading to version 0.14.8396 will fix this issue. This patch is called 3d0f9fc2eddbd6579c99af3111c37c98f03475d0. You should upgrade the affected component.
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 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
GNU libredwg是美国GNU基金会开源的一个DWG文件格式实现。 GNU LibreDWG 0.13.4-154-g0b573035版本存在缓冲区错误漏洞，该漏洞源于R2004 Section Decompression组件中的decompress_R2004_section函数存在堆缓冲区溢出，可能导致攻击者进行操纵。
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 0.13.4-154-g0b573035 cpe:2.3:a:gnu:libredwg:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-15520

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III. Intelligence Information for CVE-2026-15520

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Patches & Fixes for CVE-2026-15520 (1)

Vendor Advisories for CVE-2026-15520 (1)

Exploits & Public PoCs for CVE-2026-15520 (1)

Vendor Pages for CVE-2026-15520 (2)

Other References for CVE-2026-15520 (1)

Same Patch Batch · GNU · 2026-07-13 · 5 CVEs total

CVE-2026-40553 Stack-based buffer overflow in gawk
CVE-2026-40468 Heap buffer overflow in gawk
CVE-2026-40469 Heap buffer overflow in gawk
CVE-2026-40467 Use after free in gawk

IV. Related Vulnerabilities

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