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CVE-2021-32811

23
FAUCET Score

CVE-2021-32811 is a remote code execution vulnerability affecting Zope web application server versions prior to 4.6.3 and 5.3, specifically when using Python 3 and the optional Products.PythonScripts add-on. This vulnerability has a CVSS score of 7.2 (HIGH), indicating a high impact on confidentiality, integrity, and availability, but requires high privileges (PR:H) and is not complex to exploit (AC:L). There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
>= 4.0, < 4.3CPE matchmatch criteria
cpe:2.3:a:zope:accesscontrol:*:*:*:*:*:*:*:*
>= 5.0, < 5.2CPE matchmatch criteria
cpe:2.3:a:zope:accesscontrol:*:*:*:*:*:*:*:*
>= 4.0, < 4.6.3CPE matchmatch criteria
cpe:2.3:a:zope:zope:*:*:*:*:*:*:*:*
>= 5.0, < 5.3CPE matchmatch criteria
cpe:2.3:a:zope:zope:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.6
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.28%
Probability of exploitation in next 30 days
EPSS Percentile
81.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0228 is in the 78th percentile among its peer group of 5,537 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.3 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

github_advisorypatch availablevia nvd_reference
View patch
pippatch availablevia ghsa
Product: ZopeFixed in: 4.6.3
pippatch availablevia ghsa
Product: ZopeFixed in: 5.3

Vendor Advisories (1)

pipGHSA-g4gq-j4p2-j8frhigh

Remote Code Execution via Script (Python) objects under Python 3

Aug 5, 2021

References

github.com / zopefoundation/AccessControl/security/advisories/GHSA-qcx9-j53g-ccgf
Third Party Advisory
github.com / zopefoundation/Zope/commit/f72a18dda8e9bf2aedb46168761668464a4be988
PatchThird Party Advisory
github.com / zopefoundation/Zope/security/advisories/GHSA-g4gq-j4p2-j8fr
Third Party Advisory