CVE-2026-110606
LibreCAD libdxfrw through LC2.2.0 Stack Out-of-Bounds Read via dwgReader18::readFileHeader
LibreCAD libdxfrw
CVSS
4.8MediumExploitationPublic exploit codeCISA's assessment says proof of concept code is public, assessed 20 Oct 2026. Not in the KEV catalogCISA via CVE List
Exploit odds (EPSS)0.17%Chance of exploitation activity in the next 30 days, higher than 5% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
What fixes it
No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.
Description
LibreCAD libdxfrw through LC2.2.0 (LibreCAD through 2.2.1.5) contains a stack-based out-of-bounds read vulnerability in dwgReader18::readFileHeader() caused by calling strlen on non-NUL-terminated buffers. Attackers can supply a crafted AC1018, AC1024 or AC1027 DWG file without NUL bytes in the decrypted header to read adjacent stack memory and crash the process.
Text from CVE List
Affected versions 2
- libdxfrwaffected: all versions through LC2.2.0CVE List
- LibreCADaffected: all versions through 2.2.1.5CVE List
References 7
- github.com/LibreCAD/libdxfrw/commit/0c5595930b20917a40ed7c188475eaca624b8ce9Fixvia CVE List
- github.com/LibreCAD/LibreCAD/commit/abd1f4a8e32dbd871c986086227502217200cd4bFixvia CVE List
- hackmd.io/@haind-pwn/libdxfrw-dwg-header-oob-readAdvisoryvia CVE List
- vulncheck.com/advisories/librecad-libdxfrw-through-lc2-2.0-stack-out-of-bounds-read-via-dwgreader18-readfileheaderAdvisoryvia CVE List
- github.com/LibreCAD/LibreCAD/issues/2554Exploitvia CVE List
- github.com/LibreCAD/libdxfrw/blob/LC2.2.0/src/intern/dwgreader18.cpp#L248Referencevia CVE List
- github.com/LibreCAD/LibreCAD/blob/v2.2.1.5/libraries/libdxfrw/src/intern/dwgreader18.cpp#L248Referencevia CVE List