CVE-2026-107736

medium

Description

SumatraPDF is a multi-format reader for Windows. In 3.6.1 and earlier, MaybeFlipBitmap() asks GDI+ to read the attacker-controlled PropertyTagOrientation size through GetPropertyItem() while supplying only a fixed 64-byte buf on the stack. Opening a crafted TIFF with enough EXIF Orientation values can cause attacker-selected bytes to overwrite stack control data, while tested builds terminate through the stack cookie check. No broader impact is claimed beyond the advisory-supported conditions. No fixed version is available as of this review.

References

https://github.com/sumatrapdfreader/sumatrapdf/security/advisories/GHSA-px68-7vwv-mxpr

https://github.com/sumatrapdfreader/sumatrapdf/commit/6fe2e0239d8ef3466174ac92f3f56e967ce1a4a7

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-95411

Details

Source: Mitre, NVD

Published: 2026-10-08

Updated: 2026-10-09

Risk Information

CVSS v2

Base Score: 4.3

Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:N/A:P

Severity: Medium

CVSS v3

Base Score: 5.5

Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Severity: Medium

CVSS v4

Base Score: 6.8

Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Severity: Medium

EPSS

EPSS: 0.0012