CVE-2021-33207

CRITICALNVD 9.89.8—

9.8

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

CVSS v3: 9.8
EG Score: 9.8(medium)
EPSS: 86.3%
KEV: Not listed

Published

April 5, 2022

Last Modified

November 21, 2024

Advisory Details (2)

Auto-updated Jun 3, 2026

🔬 Proof of concept available. No patch confirmed yet.

generic

Page not found | Software AG

https://www.softwareag.com/corporate/products/az/mashzone_nextgen/default

generic🟡 PoC Available

advisories/2021/CVE-2021-33207 at master · blackarrowsec/advisories · GitHub

https://github.com/blackarrowsec/advisories/tree/master/2021/CVE-2021-33207

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-502Deserialization of Untrusted Data

Data Freshness Timeline

(refreshed 12× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-02 20:11 UTCepss_batch
2026-06-02 20:11 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-29 13:42 UTCepss_batch
2026-05-29 13:42 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-23 08:49 UTCEG score recompute
2026-05-23 08:49 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2021-33207?

CVE-2021-33207 is a critical vulnerability published on April 5, 2022. The HTTP client in MashZone NextGen through 10.7 GA deserializes untrusted data when it gets an HTTP response with a 570 status code.

When was CVE-2021-33207 disclosed?

CVE-2021-33207 was first published in the National Vulnerability Database on April 5, 2022, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2021-33207 actively exploited?

CVE-2021-33207 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 86.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2021-33207?

CVE-2021-33207 has a CVSS v3 base score of 9.8 (NVD).

How do I remediate CVE-2021-33207?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-33207, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2021-33207

📅 Published

🔄 Last Modified

📋 Advisory Details (2)