CVE-2026-63276: falha de média gravidade em The Document Foundation LibreOffice
Stack buffer overflow in CFF to Type 1 font conversion
Publicada em
Aviso por e-mail quando ela entrar no KEV, ganhar PoC pública ou subir de nota.
13Vexday Risk Score
Sem sinal de exploração. Nenhum artefato público de exploração conhecido até agora.
ssvc Trackcvss 5.4epss 0.2%
LibreOffice converts CFF fonts to Type 1 when it subsets a font, which happens when a document is exported to PDF, and CFF fonts may be embedded in documents. A stack buffer overflow existed in that conversion. The converted operators were written into a fixed size buffer with no check that they still fit, so a glyph emitting many operators wrote past the end of the buffer. In fixed versions the remaining capacity is tracked and the conversion stops when it is used up.
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N/E:P
Produtos afetados
The Document Foundation · LibreOfficeCVEs relacionadas — The Document Foundation LibreOffice
No mesmo produto, das mais perigosas para as menos.
CVE-2022-3140—Macro URL arbitrary script executionEPSS 7.0%CVE-2021-25631—denylist of executable filename extensions possible to bypass under windowsEPSS 5.0%CVE-2023-2255—Remote documents loaded without prompt via IFrameEPSS 2.2%CVE-2020-12802—remote graphics contained in docx format retrieved in 'stealth mode'EPSS 2.0%CVE-2020-12803—XForms submissions could overwrite local filesEPSS 1.8%CVE-2022-26307—Weak Master KeysEPSS 1.5%