CVE-2021-32811

HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.5 under NVD CVSS v3. EPSS exploit probability: 3.9%, top 12% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
7.5
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 2%CVSS: 7.5Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Zope is an open-source web application server. Zope versions prior to versions 4.6.3 and 5.3 have a remote code execution security issue. In order to be affected, one must use Python 3 for one's Zope deployment, run Zope 4 below version 4.6.3 or Zope 5 below version 5.3, and have the optional Products.PythonScripts add-on package installed. By default, one must have the admin-level Zope "Manager" role to add or edit Script (Python) objects through the web. Only sites that allow untrusted users to add/edit these scripts through the web are at risk. Zope releases 4.6.3 and 5.3 are not vulnerable. As a workaround, a site administrator can restrict adding/editing Script (Python) objects through the web using the standard Zope user/role permission mechanisms. Untrusted users should not be assigned the Zope Manager role and adding/editing these scripts through the web should be restricted to trusted users only. This is the default configuration in Zope.

CVSS v3
7.5
EG Score
7.5(medium)
EPSS
81.1%
KEV
Not listed

Published

August 2, 2021

Last Modified

November 21, 2024

References (6)

Affected Packages

(2 across 1 ecosystem)
PyPI(2)
PackageVulnerable rangeFixed inDependents
accesscontrol4.0, 4.1, 4.2, 5.0, 5.15.2—
zope4.0 ... 3.0.7 (30 versions)5.2—

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 9× in last 7d / 45× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-11 08:25 UTCEPSS rescore
  2. 2026-07-11 08:25 UTCEPSS rescore
  3. 2026-07-09 19:07 UTCEPSS rescore
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  15. 2026-06-30 21:00 UTCOSV refresh
  16. 2026-06-29 14:04 UTCEPSS rescore
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  1. 2026-06-23 21:31 UTCEPSS rescore
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  7. 2026-06-19 19:24 UTCEPSS rescore
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  9. 2026-06-18 17:51 UTCEPSS rescore
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  18. 2026-06-13 00:46 UTCOSV refresh
  19. 2026-06-12 23:10 UTCEPSS rescore
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  21. 2026-06-11 13:58 UTCEPSS rescore
  22. 2026-06-10 22:16 UTCEPSS rescore
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  38. 2026-05-31 22:29 UTCEPSS rescore
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  40. 2026-05-31 00:15 UTCEPSS rescore
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  42. 2026-05-29 13:42 UTCEPSS rescore
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  44. 2026-05-28 13:43 UTCEPSS rescore
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  46. 2026-05-27 13:39 UTCEPSS rescore
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  49. 2026-05-26 13:42 UTCEPSS rescore
  50. 2026-05-26 12:47 UTCEG score recompute
  51. 2026-05-26 07:17 UTCEPSS rescore
  52. 2026-05-26 07:17 UTCEPSS rescore
  53. 2026-05-26 07:17 UTCEPSS rescore

Frequently asked(5)

What is CVE-2021-32811?
CVE-2021-32811 is a high vulnerability published on August 2, 2021. Zope is an open-source web application server. Zope versions prior to versions 4.6.3 and 5.3 have a remote code execution security issue. In order to be affected, one must use Python 3 for one's Zope deployment, run Zope 4 below version 4.6.3 or Zope 5 below version 5.3, and have the optional…
When was CVE-2021-32811 disclosed?
CVE-2021-32811 was first published in the National Vulnerability Database on August 2, 2021, 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-2021-32811 actively exploited?
CVE-2021-32811 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 81.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2021-32811?
CVE-2021-32811 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2021-32811?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-32811, 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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