What is CVE-2026-25880?

CVE-2026-25880 is a high-severity vulnerability in Sumatrapdfreader Sumatrapdf, classified under Untrusted Search Path. CVSS score: 7.8/10. Published 2026-02-09.

How severe is CVE-2026-25880?

High severity. CVSS v3 base score is 7.8 out of 10.

Vulnerability in Sumatrapdfreader Sumatrapdf

CVE-2026-25880

SumatraPDF is a multi-format reader for Windows. In 3.5.2 and earlier, the PDF reader allows execution of a malicious binary (explorer.exe) located in the same directory as the opened PDF when the user clicks File → “Show in folder”. This…

EPSS: 0.002 (9.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Sumatrapdfreader Sumatrapdf — versions <= 3.5.2

Weakness classification (CWE)

CWE-426 — Untrusted Search Path

References

security-advisories@github.com (x_refsource_CONFIRM, Exploit, Vendor Advisory)

Frequently asked questions

What is CVE-2026-25880?: CVE-2026-25880 is a high-severity vulnerability in Sumatrapdfreader Sumatrapdf, classified under Untrusted Search Path. CVSS score: 7.8/10. Published 2026-02-09.
How severe is CVE-2026-25880?: High severity. CVSS v3 base score is 7.8 out of 10.