CVE-2012-6661
Plone and Zope2 do not reseed pseudo-random number generator
Zope before 2.13.19, as used in Plone before 4.2.3 and 4.3 before beta 1, does not reseed the pseudo-random number generator (PRNG), which makes it easier for remote attackers to guess the value via unspecified vectors. NOTE: this issue was SPLIT from CVE-2012-5508 due to different vulnerability types (ADT2).
Exploit likelihood
What each source reports
NVD Score used
Zope before 2.13.19, as used in Plone before 4.2.3 and 4.3 before beta 1, does not reseed the pseudo-random number generator (PRNG), which makes it easier for remote attackers to guess the value via unspecified vectors. NOTE: this issue was SPLIT from CVE-2012-5508 due to different vulnerability types (ADT2).
- Record
CVE-2012-6661- CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:P/I:N/A:N - Weakness
- CWE-310
- Updated
- 2026-11-02
CVE List No score
Zope before 2.13.19, as used in Plone before 4.2.3 and 4.3 before beta 1, does not reseed the pseudo-random number generator (PRNG), which makes it easier for remote attackers to guess the value via unspecified vectors. NOTE: this issue was SPLIT from CVE-2012-5508 due to different vulnerability types (ADT2).
- Record
CVE-2012-6661- Updated
- 2026-11-02
EUVDEUVD-2014-0069 No score
Zope before 2.13.19, as used in Plone before 4.2.3 and 4.3 before beta 1, does not reseed the pseudo-random number generator (PRNG), which makes it easier for remote attackers to guess the value via unspecified vectors. NOTE: this issue was SPLIT from CVE-2012-5508 due to different vulnerability types (ADT2).
- Record
EUVD-2014-0069- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-48vv-2pmq-9fvv
Plone and Zope2 do not reseed pseudo-random number generator
Zope before 2.13.19, as used in Plone before 4.2.3 and 4.3 before beta 1, does not reseed the pseudo-random number generator (PRNG), which makes it easier for remote attackers to guess the value via unspecified vectors. NOTE: this issue was SPLIT from CVE-2012-5508 due to different vulnerability types (ADT2).
- Record
GHSA-48vv-2pmq-9fvv- CVSS 4.0
- 8.7 High
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N - CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-336
- Updated
- 2026-11-02
OSVGHSA-48vv-2pmq-9fvv
Plone and Zope2 do not reseed pseudo-random number generator
Zope before 2.13.19, as used in Plone before 4.2.3 and 4.3 before beta 1, does not reseed the pseudo-random number generator (PRNG), which makes it easier for remote attackers to guess the value via unspecified vectors. NOTE: this issue was SPLIT from CVE-2012-5508 due to different vulnerability types (ADT2).
- Record
GHSA-48vv-2pmq-9fvv- CVSS 4.0
- 8.7 High
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N - CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-336
- Updated
- 2026-11-02
OSVPYSEC-2014-51 No score
Zope before 2.13.19, as used in Plone before 4.2.3 and 4.3 before beta 1, does not reseed the pseudo-random number generator (PRNG), which makes it easier for remote attackers to guess the value via unspecified vectors. NOTE: this issue was SPLIT from CVE-2012-5508 due to different vulnerability types (ADT2).
- Record
PYSEC-2014-51- Updated
- 2026-11-02
OSVPYSEC-2014-76 No score
Zope before 2.13.19, as used in Plone before 4.2.3 and 4.3 before beta 1, does not reseed the pseudo-random number generator (PRNG), which makes it easier for remote attackers to guess the value via unspecified vectors. NOTE: this issue was SPLIT from CVE-2012-5508 due to different vulnerability types (ADT2).
- Record
PYSEC-2014-76- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
zope2PyPI |
before 2.13.19 | 2.13.19 |
plonePyPI |
3.2.2 up to 4.2.3 | 4.2.3 |
plonePyPI |
4.3a1 to 4.3a2 | 4.3b1 |
zope2PyPI |
before 2.13.19, plus listed versions 2.12.02.12.0.a12.12.0a22.12.0a32.12.0a4 Show 45 moreShow less2.12.0b12.12.0b22.12.0b32.12.0b42.12.0c12.12.12.12.102.12.112.12.122.12.132.12.142.12.152.12.162.12.172.12.182.12.192.12.22.12.202.12.212.12.222.12.232.12.242.12.252.12.262.12.272.12.282.12.32.12.42.12.52.12.62.12.72.12.82.12.92.13.02.13.0a12.13.0a22.13.0a32.13.0a42.13.0b12.13.0c12.13.12.13.102.13.112.13.122.13.13 |
2.13.19 |
plonePyPI |
3.2.2 up to 4.2.3, plus listed versions 3.2.33.33.3.13.3.23.3.3 Show 45 moreShow less3.3.43.3.53.3.63.3b13.3rc13.3rc23.3rc33.3rc43.3rc54.04.0.14.0.104.0.24.0.34.0.44.0.54.0.64.0.74.0.84.0.94.0a14.0a24.0a34.0a44.0a54.0b14.0b24.0b34.0b44.0b54.0rc14.14.1.14.1.24.1.34.1.44.1.54.1.64.1a14.1a24.1a34.1b14.1b24.1rc24.1rc3 |
4.2.3 |
plonePyPI |
4.3a1 up to 4.3b1, plus listed versions 4.3a2 |
4.3b1 |
plonePyPI |
before 4.2.3, 4.3a0 up to 4.3b1, plus listed versions 3.23.2.13.2.23.2.33.2a1 Show 45 moreShow less3.2rc13.33.3.13.3.23.3.33.3.43.3.53.3.63.3b13.3rc13.3rc23.3rc33.3rc43.3rc54.04.0.14.0.104.0.24.0.34.0.44.0.54.0.64.0.74.0.84.0.94.0a14.0a24.0a34.0a44.0a54.0b14.0b24.0b34.0b44.0b54.0rc14.14.1.14.1.24.1.34.1.44.1.54.1.64.1a14.1a2 |
4.2.34.3b1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2012-6661 is a medium vulnerability (CVSS 5.0) in Plone, published November 3, 2014. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.38%, the 83rd percentile. Fixed in zope2 2.13.19.
References
Left out here: 38 versions. The JSON record has them.