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

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
n/a n/a affected
Version Status Constraints
n/a affected —

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Advisories

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Fixes

Solution

No solution given by the vendor.

Workaround

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References
Link Providers
https://github.com/chenjiefeng2001/sumatrapdf_folked/commit/b22a8c71ddc9de80ece5f88d14b434c20fee912e cve-icon cve-icon
https://github.com/haimag/sumatrapdf/commit/8b999ff1bf0a8df244e75440682a3fd9a038eb2d cve-icon cve-icon
https://github.com/sumatrapdfreader/sumatrapdf/issues/5952 cve-icon cve-icon
History

Thu, 24 Sep 2026 15:30:00 +0000

Type Values Removed Values Added
Description SumatraPDF 3.6.1 contains an integer overflow vulnerability in EngineMupdf::BuildPageLabelRec() when parsing PDF PageLabels /Nums entries.
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-09-24T15:25:58.560Z

Reserved: 2026-09-10T00:00:00.000Z

Link: CVE-2026-88361

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-09-24T16:17:13.217

Modified: 2026-09-24T16:17:13.217

Link: CVE-2026-88361

cve-icon Redhat

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cve-icon OpenCVE Enrichment

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Weaknesses

No weakness.