MinorCritical vulnerability
CVE-2026-88361 (CVSS 7.5)
NVD · officialPublished Sep 24, 2026Risk 23/100EPSS 0.2%
SumatraPDF 3.6.1 contains an integer overflow vulnerability in EngineMupdf::BuildPageLabelRec() when parsing PDF PageLabels /Nums entries.
Technical details
CVSS
7.5
AV:NetworkAC:LowPR:NoneUI:NoneC:NoneI:NoneA:High
Evidence and sources
This record is attributed to NVD. Exploitation status and remediation guidance are kept separate from the vulnerability's technical severity.
Open primary source