What is CVE-2021-27213?

CVE-2021-27213 is a critical-severity vulnerability in Pystemon Project, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2021-02-14.

How severe is CVE-2021-27213?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Deserialization in Pystemon Project

CVE-2021-27213

config.py in pystemon before 2021-02-13 allows code execution via YAML deserialization because SafeLoader and safe_load are not used.

Vulnerability class: Insecure Deserialization

EPSS: 0.026 (83.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Pystemon_project Pystemon
N/a — versions n/a

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

References

cve@mitre.org (Patch, Third Party Advisory, x_refsource_MISC)
cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2021-27213?: CVE-2021-27213 is a critical-severity vulnerability in Pystemon Project, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2021-02-14.
How severe is CVE-2021-27213?: Critical severity. CVSS v3 base score is 9.8 out of 10.