What is CVE-2020-15850?

CVE-2020-15850 is a high-severity vulnerability in Linux Kernel, classified under Incorrect Default Permissions. CVSS score: 7.8/10. Published 2020-09-24.

How severe is CVE-2020-15850?

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

Vulnerability in Linux Kernel

CVE-2020-15850

Insecure permissions in Nakivo Backup & Replication Director version 9.4.0.r43656 on Linux allow local users to access the Nakivo Director web interface and gain root privileges. This occurs because the database containing the users of the web application and the password-recovery secret value is readable.

Published 2020-09-24 · last modified 2026-06-17.

CVSS v3 metric

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

EPSS exploit prediction

EPSS: 0.005 (42.0th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 42nd percentile — 42.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000

Affected products

Linux Kernel
Nakivo Backup \& Replication Director — versions 9.4.0.r43656

Weakness classification (CWE)

CWE-276 — Incorrect Default Permissions

References

labs.f-secure.com/advisories/nakivo-backup-and-replication-multiple-vulnerabili… (Exploit, Third Party Advisory)
helpcenter.nakivo.com/display/RN/v10.3+Release+Notes (Release Notes, Vendor Advisory)

Frequently asked questions

What is CVE-2020-15850?: CVE-2020-15850 is a high-severity vulnerability in Linux Kernel, classified under Incorrect Default Permissions. CVSS score: 7.8/10. Published 2020-09-24.
How severe is CVE-2020-15850?: High severity. CVSS v3 base score is 7.8 out of 10.