What is CVE-2021-28100?

CVE-2021-28100 is a medium-severity vulnerability in Netflix Priam. CVSS score: 5.5/10. Published 2021-03-23.

How severe is CVE-2021-28100?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Vulnerability in Netflix Priam

CVE-2021-28100

Priam uses File.createTempFile, which gives the permissions on that file -rw-r--r--. An attacker with read access to the local filesystem can read anything written there by the Priam process.

Published 2021-03-23 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.003 (15.8th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 16th percentile — 15.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Netflix Priam
Netflix Oss Priam — versions All versions

References

github.com/Netflix/security-bulletins/blob/master/advisories/nflx-2021-002.md (Third Party Advisory)

Frequently asked questions

What is CVE-2021-28100?: CVE-2021-28100 is a medium-severity vulnerability in Netflix Priam. CVSS score: 5.5/10. Published 2021-03-23.
How severe is CVE-2021-28100?: Medium severity. CVSS v3 base score is 5.5 out of 10.