CVE Watch5 de nov. de 2026

CVE-2026-54610

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

CVSS

3.3

Baixa

EPSS

0.1%

KEV

—

Exploit Today

0-100

Publicado: 30 de out. de 2026 · Última mod.: 5 de nov. de 2026 · CWE-471 · CWE-703

EPSS · 30d

0.1%EPSS · 30 dias0.1%

2026-10-312026-11-05

Descrição técnica

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.

Referências oficiais

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