OCTOBER 9, 2026
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Case File

CVE-2026-88361

HIGH · CVSS 7.5 EPSS 0.43% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-09-24 · Last synced 2026-10-09

CyberRota Analysis

AI-Generated

An integer overflow vulnerability exists in SumatraPDF 3.6.1 within the EngineMupdf::BuildPageLabelRec() function, specifically when handling PDF PageLabels /Nums entries. This flaw could potentially lead to arbitrary code execution or application crashes, posing a risk to users of the affected PDF viewer. Organizations utilizing SumatraPDF should prioritize addressing this vulnerability to mitigate potential exploitation.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

GitHub PoC Links
github.com ↗ github.com ↗ github.com ↗

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-88361
Severity
HIGH
CVSS
7.5
EPSS
0.43%

Original NVD Description

SumatraPDF 3.6.1 contains an integer overflow vulnerability in EngineMupdf::BuildPageLabelRec() when parsing PDF PageLabels /Nums entries.