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Fencer Intel
high 7.5

CVE-2011-2528 json

High severity vulnerability that affects Plone and Zope2

published 2011-07-19 15 y ago modified 2026-07-09 4 mo ago also GHSA-p6h9-hpcg-c6gm , PYSEC-2011-25 , PYSEC-2011-32 , PYSEC-2026-764 , EUVD-2011-0023

cvss
7.5
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.0%
EPSS 2.0% chance of exploitation in 30 days, percentile 81%
public exploits
0
none known

Summary

Unspecified vulnerability in (1) Zope 2.12.x before 2.12.19 and 2.13.x before 2.13.8, as used in Plone 4.x and other products, and (2) PloneHotfix20110720 for Plone 3.x allows attackers to gain privileges via unspecified vectors, related to a "highly serious vulnerability." NOTE: this vulnerability exists because of an incorrect fix for CVE-2011-0720.

Patch / fix

  • pypi plone 3.3.6
  • pypi zope2 2.12.19, 2.13.8

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2011-2528 updated cvss 7.5

plone: privilege escalation vulnerability

  • Red Hat Enterprise Linux 5 conga Red Hat Enterprise Linux 6 luci
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

2.03% chance of exploitation in the next 30 days, higher than 81% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

Affected packages

ecosystem package affected fixed in
pypi plone
>=3.3.2, <3.3.6
3.3.6
pypi zope2
>=2.12.0, <2.12.19
>=2.13.0, <2.13.8
2.12.19
2.13.8

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.