Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-90622— GNU libredwg Layer Encoding dwg.spec DWG_TABLE null pointer dereference

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版本存在安全漏洞，该漏洞源于Layer Encoding组件中文件src/dwg.spec的DWG_TABLE函数处理不当，可能导致空指针取消引用。

CVSS 3.3 · Low EPSS 0.17% · P6

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 2

VendorProduct Version RangeStatus
GNU libredwg 0.13.4 affected
0.14 unaffected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-90622

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
GNU libredwg Layer Encoding dwg.spec DWG_TABLE null pointer dereference
Source: CVE Program / CVE List V5
Vulnerability Description
A security flaw has been discovered in GNU libredwg 0.13.4. This impacts the function DWG_TABLE of the file src/dwg.spec of the component Layer Encoding. Performing a manipulation results in null pointer dereference. The attack needs to be approached locally. The exploit has been released to the public and may be used for attacks. Upgrading to version 0.14 will fix this issue. The patch is named f5b548c4c1697d66c3dabd0f6a49280a14365a3a. The affected component should be upgraded. The FIELD_HANDLE macro itself is NULL-safe (emits null_handle) - only the two raw zeroing assignments added by 27118c40 ("encode: also disable LAYER.material") dereferenced a NULL material handle; the fix restores the file's existing if (_obj->style) guard convention for material.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
空指针解引用
Source: CVE Program / CVE List V5
Vulnerability Title
GNU libredwg 资源管理错误漏洞
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版本存在安全漏洞，该漏洞源于Layer Encoding组件中文件src/dwg.spec的DWG_TABLE函数处理不当，可能导致空指针取消引用。
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 cpe:2.3:a:gnu:libredwg:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-90622

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-90622

请登录查看更多情报信息。

Patches & Fixes for CVE-2026-90622 (1)

Vendor Pages for CVE-2026-90622 (2)

Other References for CVE-2026-90622 (1)

Other References for CVE-2026-90622 (1)

Same Patch Batch · GNU · 2026-09-14 · 9 CVEs total

CVE-2026-90801 5.3 MEDIUM GNU Binutils ld cache.c cache_bwrite buffer overflow
CVE-2026-90803 5.3 MEDIUM GNU Binutils ld elf64-x86-64.c elf_x86_64_relocate_section buffer overflow
CVE-2026-90828 5.3 MEDIUM GNU Binutils ELF Orphan Section ldelf.c elf_orphan_compatible null pointer dereference
CVE-2026-90829 5.3 MEDIUM GNU Binutils SHT_GROUP Section elf.c bfd_elf_set_group_contents null pointer dereference
CVE-2026-90830 5.3 MEDIUM GNU Binutils Section Merge merge.c _bfd_write_merged_section null pointer dereference
CVE-2026-90831 5.3 MEDIUM GNU Binutils ELF String Table elf-strtab.c _bfd_elf_strtab_delref memory corruption
CVE-2026-90804 4.8 MEDIUM GNU Binutils Eh Frame Section elf-eh-frame.c _bfd_elf_write_section_eh_frame buffer overfl
CVE-2026-90802 4.4 MEDIUM GNU Binutils ld libbfd.c bfd_putl64 null pointer dereference

IV. Related Vulnerabilities

Same product: libredwg
Same vendor: GNU
Same weakness: CWE-476