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 behavior leads to arbitrary code execution on the victim’s system with the privileges of the current user, without any warning or user interaction beyond the menu click.
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.002 (9.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 10th percentile — 9.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.000
Affected products
- Sumatrapdfreader Sumatrapdf — versions <= 3.5.2
Weakness classification (CWE)
References
- github.com/sumatrapdfreader/sumatrapdf/security/advisories/GHSA-5x4h-247q-px37 (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.