CVE-2026-54610Low· 3.3▾ TwilightPoC availableLibreDWG is a free C library to read and write DWG files. Prior to 0.14, `bit_TV_to_utf8()` in `src/bits.c` can write to the caller-provided `src` buffer despite accepting const input. On an `iconv()` error other than `E2BIG`, the functi…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 18.2 · likelihood 0 · exploitation 12
A public proof-of-concept already exists for this vulnerability — see Exploit availability below.
Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake. The CVSS score shown above comes from the assigning CNA record, not NVD.
Exploit-prediction probability, daily snapshots since Nov 5.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
Last analysed / modified upstream
0.1%
LibreDWG is a free C library to read and write DWG files. Prior to 0.14, bit_TV_to_utf8() in src/bits.c can write to the caller-provided src buffer despite accepting const input. On an iconv() error other than E2BIG, the function frees its output buffer and passes the original input alias to bit_u_expand(), which expands or shrinks Unicode and multibyte escape sequences in place. If the input is a string literal, read-only mapping, or other immutable buffer, the write can cause a segmentation fault and denial of service; mutable caller-owned input can be unexpectedly modified before being returned. This affects applications that expose the conversion API to untrusted input under those conditions. Direct file-triggered exploitability through normal DWG decode/export paths remains unconfirmed because many TV strings are heap allocated by bit_read_TV(). This issue is fixed in version 0.14.
libredwg < 0.14Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
CVE-2026-90622Low· 3.3A security flaw has been discovered in GNU libredwg 0.13.4
CVE-2026-62254Medium· 5.5LibreDWG: excessive class-decoding reallocation in R13-R2000 DWG parsing
CVE-2026-62250Medium· 5.5LibreDWG: unbounded allocation in pre-R13 DWG entity decoding
CVE-2026-111167Medium· 6.1GNU LibreDWG through 0.14.8612 contains a global out-of-bounds read vulnerability in the AcDs decoder acds_private() that allows attackers to read beyond a static table via an unchecked schema property type index
CVE-2020-21831High· 8.8A heap based buffer overflow vulnerability exists in GNU LibreDWG 0.10 via read_2004_section_handles ../../src/decode.c:2637.
CVE-2020-21836High· 8.8A heap based buffer overflow vulnerability exists in GNU LibreDWG 0.10 via read_2004_section_preview ../../src/decode.c:3175.