CVE-2026-107737: falha de média gravidade em sumatrapdfreader sumatrapdf
SumatraPDF CHM `its://` signed index causes an out-of-bounds object lookup
Publicada em · Atualizada 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 5.7epss 0.2%
SumatraPDF is a multi-format reader for Windows. In 3.6.1 and earlier, and in pre-release 3.7.0.20369 when WebView2 is absent or cannot initialize, ParseProtoUrl() accepts the signed host component of an its:// URL and FindHtmlWindowById() uses it directly as an index into gHtmlWindows. Opening a crafted CHM through the IE fallback backend with a negative or otherwise out-of-range window identifier can cause an out-of-bounds pointer read followed by an invalid object callback dereference and process termination. No fixed version is available as of this review.
CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Produtos afetados
sumatrapdfreader · sumatrapdfCVEs relacionadas — sumatrapdfreader sumatrapdf
No mesmo produto, das mais perigosas para as menos.
CVE-2026-25961HIGHSumatraPDF Update MITM -> Arbitrary Code ExecutionEPSS 0.4%CVE-2026-25920MEDIUMSumatraPDF has a heap out-of-bounds read in MOBI HuffDic decompressorEPSS 0.3%CVE-2026-25880HIGHUntrusted Search Path in SumatraPDF Reader (explorer.exe on Windows)EPSS 0.2%CVE-2026-23512HIGHSumatraPDF has an Untrusted Search Path in sumatrapdf/src/AppTools.cppEPSS 0.2%CVE-2026-23951MEDIUMSumatraPDF's Integer Underflow in PalmDbReader Leads to CrashEPSS 0.2%CVE-2026-26054MEDIUMSumatraPDF: Heap out-of-bounds read in MOBI header parser.EPSS 0.2%