CVE-2026-110606
LibreCAD libdxfrw through LC2.2.0 Stack Out-of-Bounds Read via dwgReader18::readFileHeader
CVSS Score
3.3
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-125 |
| Vendor | librecad |
| Product | libdxfrw |
| Published | Oct 14, 2026 |
Stay Ahead of the Next One
Get instant alerts for librecad libdxfrw
Be the first to know when new low vulnerabilities affecting librecad libdxfrw are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
Low
Affected Versions
LibreCAD / libdxfrw
0 ≤ LC2.2.0
LibreCAD / LibreCAD
0 ≤ 2.2.1.5
References
github.com: https://github.com/LibreCAD/LibreCAD/issues/2554 hackmd.io: https://hackmd.io/@haind-pwn/libdxfrw-dwg-header-oob-read github.com: https://github.com/LibreCAD/libdxfrw/blob/LC2.2.0/src/intern/dwgreader18.cpp#L248 github.com: https://github.com/LibreCAD/LibreCAD/blob/v2.2.1.5/libraries/libdxfrw/src/intern/dwgreader18.cpp#L248 github.com: https://github.com/LibreCAD/libdxfrw/commit/0c5595930b20917a40ed7c188475eaca624b8ce9 github.com: https://github.com/LibreCAD/LibreCAD/commit/abd1f4a8e32dbd871c986086227502217200cd4b vulncheck.com: https://www.vulncheck.com/advisories/librecad-libdxfrw-through-lc2-2.0-stack-out-of-bounds-read-via-dwgreader18-readfileheader
Credits
dayzsec HaiND from the Post and Telecommunication Institute of Technology