EUVD-2026-42580
GHSA-3h8r-9w82-hxmh
Severity by source
CVSS: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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Local file-parsing attack requires low privileges to supply the malicious DWG; no scope change occurs and impact is bounded to the parsing process.
Primary rating from Vendor (VulDB).
CVSS VectorVendor: VulDB
CVSS: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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Lifecycle Timeline
3DescriptionCVE.org
A vulnerability has been found in GNU LibreDWG up to 0.13.4. The affected element is the function dwg_bmp of the file src/dwg.c of the component BMP Image Handler. Such manipulation leads to heap-based buffer overflow. The attack must be carried out locally. The exploit has been disclosed to the public and may be used. Upgrading to version 0.14 is sufficient to fix this issue. The name of the patch is 18fd542bb4d5ccedf9de12052bf50068b2b26f06. It is suggested to upgrade the affected component.
AnalysisAI
Heap-based buffer overflow in GNU LibreDWG up to version 0.13.4 allows local low-privileged attackers to corrupt heap memory via a specially crafted DWG file containing malicious BMP image data processed by the dwg_bmp function in src/dwg.c. A public proof-of-concept exploit (a crafted R13/R2000 .dwg file) has been disclosed on GitHub, raising the urgency for affected deployments that process untrusted DWG input. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires that a target system runs an application built against GNU LibreDWG 0.13.4 or earlier and that application processes a malicious DWG file containing crafted BMP image data - specifically traversing the dwg_bmp code path in src/dwg.c. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 score of 4.8 (Medium) appropriately reflects the constrained real-world risk profile: the local attack vector (AV:L) and low-privilege requirement (PR:L) mean an attacker cannot exploit this remotely against an unattended system. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker crafts a malicious DWG file (analogous to the publicly disclosed R13/R2000 .dwg POC at https://github.com/HackC0der/CVE-Repos/blob/main/libredwg/libredwg_0b57303_heap_overflow_decode_R13_R2000.dwg) and delivers it to a user running a LibreDWG-based CAD application, or places it in a directory where an automated DWG processing pipeline will ingest it. When the application calls dwg_bmp to parse the embedded BMP image data, the crafted dimensions or data length trigger a write past the heap buffer boundary, corrupting adjacent heap structures and causing at minimum an application crash, and potentially enabling code execution under the user's privilege context. |
| Remediation | The primary remediation is to upgrade GNU LibreDWG to version 0.14 or later, which fully resolves the heap-based buffer overflow in the dwg_bmp function. … Detailed patch versions, workarounds, and compensating controls in full report. |
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LibreDWG v0.12.4.4608 & commit f2dea29 was discovered to contain a heap use-after-free via bit_copy_chain. Rated critica
LibreDWG v0.12.3 was discovered to contain a heap-buffer overflow via decode_preR13. Rated critical severity (CVSS 9.8),
GNU LibreDWG 0.10 is affected by: memcpy-param-overlap. Rated high severity (CVSS 8.8), this vulnerability is remotely e
An issue was discovered in GNU LibreDWG 0.7 and 0.7.1645. Rated critical severity (CVSS 9.1), this vulnerability is remo
An issue was discovered in GNU LibreDWG 0.7 and 0.7.1645. Rated critical severity (CVSS 9.1), this vulnerability is remo
A heap based buffer overflow vulnerability exits in GNU LibreDWG 0.10 via: read_2004_section_classes ../../src/decode.c:
A heap based buffer overflow vulnerability exits in GNU LibreDWG 0.10 via bit_read_B ../../src/bits.c:135. Rated high se
A heap based buffer overflow vulnerability exits in GNU LibreDWG 0.10 via bit_search_sentinel ../../src/bits.c:1985. Rat
A heap based buffer overflow vulnerability exits in GNU LibreDWG 0.10 via: read_2004_section_appinfo ../../src/decode.c:
A heap based buffer overflow vulnerability exits in GNU LibreDWG 0.10 via bit_read_RC ../../src/bits.c:318. Rated high s
A heap based buffer overflow vulnerability exists in GNU LibreDWG 0.10 via read_2004_section_revhistory ../../src/decode
A heap based buffer overflow vulnerability exists in GNU LibreDWG 0.10 via read_2004_compressed_section ../../src/decode
Same weakness CWE-122 – Heap-based Buffer Overflow
View allSame technique Heap Overflow
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External POC / Exploit Code
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