Low severity · published Oct 14, 2026
CVE-2026-110606
LibreCAD libdxfrw through LC2.2.0 Stack Out-of-Bounds Read via dwgReader18::readFileHeader
3.3
CVSS
0.2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
None
Integrity
None
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 14% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
LI
LibreCAD · LibreCAD
through 2.2.1.5 · source: vendor
LI
libdxfrw · LibreCAD
through LC2.2.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-110606
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-110606
issue-tracking
https://github.com/LibreCAD/LibreCAD/issues/2554
third-party-advisory
https://hackmd.io/@haind-pwn/libdxfrw-dwg-header-oob-read
technical-description
https://github.com/LibreCAD/libdxfrw/blob/LC2.2.0/src/intern/dwgreader18.cpp#L248
technical-description
https://github.com/LibreCAD/LibreCAD/blob/v2.2.1.5/libraries/libdxfrw/src/intern/dwgreader18.cpp#L248
patch
https://github.com/LibreCAD/libdxfrw/commit/0c5595930b20917a40ed7c188475eaca624b8ce9
patch
https://github.com/LibreCAD/LibreCAD/commit/abd1f4a8e32dbd871c986086227502217200cd4b
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