What is CVE-2019-17199?

CVE-2019-17199 is a high-severity vulnerability in Microsoft Windows, classified under Path Traversal. CVSS score: 7.5/10. Published 2019-10-05.

How severe is CVE-2019-17199?

High severity. CVSS v3 base score is 7.5 out of 10.

Is CVE-2019-17199 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Path Traversal in Microsoft Windows

CVE-2019-17199

www/getfile.php in WPO WebPageTest 19.04 on Windows allows Directory Traversal (for reading arbitrary files) because of an unanchored regular expression, as demonstrated by the a.jpg\.. substring.

Vulnerability class: Path Traversal (Directory Traversal)

Published 2019-10-05 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.100 (95.5th percentile), scored 2026-10-09.

Low probability of exploitation in the next 30 days, but still tracked. 95th percentile — 95.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.100 · newest: 0.100 · change: 0.000

Affected products

Microsoft Windows
Webpagetest — versions 19.04

Weakness classification (CWE)

CWE-22 — Path Traversal

Public proof-of-concept exploits

References

github.com/WPO-Foundation/webpagetest/pull/1299 (Exploit, Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2019-17199?: CVE-2019-17199 is a high-severity vulnerability in Microsoft Windows, classified under Path Traversal. CVSS score: 7.5/10. Published 2019-10-05.
How severe is CVE-2019-17199?: High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2019-17199 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.