What is CVE-2020-25039?

CVE-2020-25039 is a high-severity vulnerability in Sylabs Singularity, classified under Exposure of Resource to Wrong Sphere. CVSS score: 8.1/10. Published 2020-09-16.

How severe is CVE-2020-25039?

High severity. CVSS v3 base score is 8.1 out of 10.

Vulnerability in Sylabs Singularity

CVE-2020-25039

Sylabs Singularity 3.2.0 through 3.6.2 has Insecure Permissions on temporary directories used in fakeroot or user namespace container execution.

Published 2020-09-16 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N.

EPSS exploit prediction

EPSS: 0.020 (80.1th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 80th percentile — 80.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.020 · newest: 0.020 · change: 0.000

Affected products

Sylabs Singularity
openSUSE Leap — versions 15.1, 15.2

Weakness classification (CWE)

CWE-668 — Exposure of Resource to Wrong Sphere

References

medium.com/sylabs (Product)
github.com/hpcng/singularity/security/advisories/GHSA-w6v2-qchm-grj7 (Third Party Advisory, Mitigation)
lists.opensuse.org/opensuse-security-announce/2020-09/msg00070.html (vendor-advisory, Third Party Advisory)
lists.opensuse.org/opensuse-security-announce/2020-09/msg00088.html (vendor-advisory, Third Party Advisory)

Frequently asked questions

What is CVE-2020-25039?: CVE-2020-25039 is a high-severity vulnerability in Sylabs Singularity, classified under Exposure of Resource to Wrong Sphere. CVSS score: 8.1/10. Published 2020-09-16.
How severe is CVE-2020-25039?: High severity. CVSS v3 base score is 8.1 out of 10.