CVE-2026-88361

State: Published
Severity: 7.5 High
Published: Sep 24, 2026
Updated: Sep 25, 2026
Reserved: Sep 10, 2026

Description

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

Scores

CVSS	Score	Vector	Source
3.1	7.5 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	CISA-ADP

Weaknesses

CWE-190 Integer Overflow or Wraparound

Affected Products

Product	Versions
n/an/a	n/aAffected

References

https://github.com/sumatrapdfreader/sumatrapdf/issues/5952
https://github.com/haimag/sumatrapdf/commit/8b999ff1bf0a8df244e75440682a3fd9a038eb2d
https://github.com/chenjiefeng2001/sumatrapdf_folked/commit/b22a8c71ddc9de80ece5f88d14b434c20fee912e

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