{"affected":[{"affectedData":[{"product":"libredwg","vendor":"LibreDWG","versions":[{"status":"affected","version":"< 0.14"}]}],"source":"security-advisories@github.com"}],"cveTags":[],"descriptions":[{"lang":"en","value":"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."}],"id":"CVE-2026-54610","lastModified":"2026-11-05T03:17:28.487","metrics":{"cvssMetricV31":[{"cvssData":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"LOW","baseScore":3.3,"baseSeverity":"LOW","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L","version":"3.1"},"exploitabilityScore":1.8,"impactScore":1.4,"source":"security-advisories@github.com","type":"Secondary"}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"id":"CVE-2026-54610","options":[{"exploitation":"poc"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","timestamp":"2026-11-05T02:47:14.068437Z","version":"2.0.3"}}]},"published":"2026-10-30T21:16:57.520","references":[{"source":"security-advisories@github.com","url":"https://github.com/LibreDWG/libredwg/commit/08c034a224a4e9512b1cd62e74b5cf081a4cfa89"},{"source":"security-advisories@github.com","url":"https://github.com/LibreDWG/libredwg/releases/tag/0.14"},{"source":"security-advisories@github.com","url":"https://github.com/LibreDWG/libredwg/security/advisories/GHSA-5p98-8245-6hxq"},{"source":"security-advisories@github.com","url":"https://github.com/user-attachments/files/28631091/libredwg-bit-tv-to-utf8-submission.tar.gz"},{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","url":"https://github.com/LibreDWG/libredwg/security/advisories/GHSA-5p98-8245-6hxq"}],"sourceIdentifier":"security-advisories@github.com","vulnStatus":"Deferred","weaknesses":[{"description":[{"lang":"en","value":"CWE-471"},{"lang":"en","value":"CWE-703"}],"source":"security-advisories@github.com","type":"Secondary"}]}