What is CVE-2019-17560?

CVE-2019-17560 is a critical-severity vulnerability in Apache Netbeans, classified under Improper Certificate Validation. CVSS score: 9.1/10. Published 2020-03-30.

How severe is CVE-2019-17560?

Critical severity. CVSS v3 base score is 9.1 out of 10.

Vulnerability in Apache Netbeans

CVE-2019-17560

The "Apache NetBeans" autoupdate system does not validate SSL certificates and hostnames for https based downloads. This allows an attacker to intercept downloads of autoupdates and modify the download, potentially injecting malicious code. “Apache NetBeans" versions up to and including 11.2 are affected by this vulnerability.

Vulnerability class: Improper Certificate Validation

Published 2020-03-30 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.

EPSS exploit prediction

EPSS: 0.023 (83.2th percentile), scored 2026-10-19.

Low probability of exploitation in the next 30 days, but still tracked. 83rd percentile — 83.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.021 · newest: 0.023 · change: +0.002

Affected products

Apache Netbeans
Oracle Graalvm — versions 19.3.2, 20.1.0
Apache Netbeans — versions through 11.2

Weakness classification (CWE)

CWE-295 — Improper Certificate Validation

References

www.oracle.com/security-alerts/cpujul2020.html (Patch, Third Party Advisory)
lists.apache.org/thread.html/r354d7654efa1050539fe56a3257696d1faeea4f3f9b633c29… (Mailing List, Mitigation, Vendor Advisory)

Frequently asked questions

What is CVE-2019-17560?: CVE-2019-17560 is a critical-severity vulnerability in Apache Netbeans, classified under Improper Certificate Validation. CVSS score: 9.1/10. Published 2020-03-30.
How severe is CVE-2019-17560?: Critical severity. CVSS v3 base score is 9.1 out of 10.