What is CVE-2021-33207?

CVE-2021-33207 is a critical-severity vulnerability in Softwareag Mashzone Nextgen, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2022-04-05.

How severe is CVE-2021-33207?

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

Deserialization in Softwareag Mashzone Nextgen

CVE-2021-33207

The HTTP client in MashZone NextGen through 10.7 GA deserializes untrusted data when it gets an HTTP response with a 570 status code.

Vulnerability class: Insecure Deserialization

Published 2022-04-05 · last modified 2026-06-17.

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.

EPSS exploit prediction

EPSS: 0.016 (75.2th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 75th percentile — 75.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.016 · newest: 0.016 · change: 0.000

Affected products

Softwareag Mashzone Nextgen

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

References

www.softwareag.com/corporate/products/az/mashzone_nextgen/default (Vendor Advisory)
github.com/blackarrowsec/advisories/tree/master/2021/CVE-2021-33207 (Third Party Advisory)

Frequently asked questions

What is CVE-2021-33207?: CVE-2021-33207 is a critical-severity vulnerability in Softwareag Mashzone Nextgen, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2022-04-05.
How severe is CVE-2021-33207?: Critical severity. CVSS v3 base score is 9.8 out of 10.