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CVE-2021-3426: python before 2.7.18 (exclusive), from 3.6.0 (inclusive), before 3.6.13 (exclusive), from 3.7.0 (inclusive), before…
CVE-2021-3426. CVSS 3.1 base score 5.7 (MEDIUM, NVD). EPSS 0.01878 (percentile 0.78895), scored 13-Oct-2026.
Affected technology
python · before 2.7.18 (exclusive)
python
python · from 3.6.0 (inclusive), before 3.6.13 (exclusive)
python
python · from 3.7.0 (inclusive), before 3.7.10 (exclusive)
python
python · from 3.8.0 (inclusive), before 3.8.8 (exclusive)
python
python · from 3.9.0 (inclusive), before 3.9.3 (exclusive)
python
python · 3.10.0 · update alpha1
python
python · 3.10.0 · update alpha2
python
python · 3.10.0 · update alpha3
python
python · 3.10.0 · update alpha4
python
python · 3.10.0 · update alpha5
python
python · 3.10.0 · update alpha6
python
fedora · 32
fedoraproject
fedora · 33
fedoraproject
fedora · 34
fedoraproject
debian linux · 9.0
debian
software collections · Version not applicable in the source CPE
redhat
enterprise linux · 8.0
redhat
cloud backup · Version not applicable in the source CPE
netapp
ontap select deploy administration utility · Version not applicable in the source CPE
netapp
snapcenter · Version not applicable in the source CPE
netapp
communications cloud native core binding support function · 1.10.0
oracle
zfs storage appliance kit · 8.8
oracle
python · python 3.8.9, python 3.9.3, python 3.10.0a7
Vendor not specified by the source
SIMATIC S7-1500 CPU 1518-4 PN/DP MFP · V3.1.0 to before V3.1.5
Siemens
SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP · V3.1.0 to before V3.1.5
Siemens
SIPLUS S7-1500 CPU 1518-4 PN/DP MFP · V3.1.0 to before V3.1.5
Siemens
Component: Not specified by the source
Attack conditions (NVD, CVSS 3.1): Adjacent network · Low privileges required · No user interaction required
Attack conditions (Source advisory, CVSS 3.1): Adjacent network · Low privileges required · No user interaction required
What an attacker can do
The source reports that an attacker could access information they should not be able to access. NVD’s CVSS 3.1 assessment (base score 5.7/10) rates confidentiality impact as high; integrity and availability impact as none. Source advisory’s CVSS 3.1 assessment (base score 5.7/10) rates confidentiality impact as high; integrity and availability impact as none.
- CWE
- CWE-22, CWE-200
- CCR priority
- 23.3 /100 (P4)
- CVSS 3.1
- 5.7 /10 · CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N · NVD
- EPSS
- 0.01878 · percentile 0.78895 · 2026-10-13
- KEV
- no
Provenance
- GitHub Advisory Database · Source record · observed 2026-10-14 16:01:16.619248+00:00 UTC
- NVD CVE API 2.0 · Source record · observed 2026-10-14 15:56:36.793806+00:00 UTC
Stable permalink: https://cybercodered.org/item/cve-cve-2021-3426.html