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CVE-2015-6420: commons collections 4.0; +1 more affected products
CVE-2015-6420. CVSS 3.1 base score 9.8 (CRITICAL, NVD). EPSS 0.18618 (percentile 0.9719), scored 2026-10-06.
Affected technology
commons collections · from 3.0 (inclusive), before 3.2.2 (exclusive)
apache
commons collections · 4.0
apache
n/a · n/a
Vendor not specified by the source
Component: Not specified by the source
Attack conditions (NVD, CVSS 3.1): Network (remote) · No privileges required · No user interaction required
Attack conditions (Source advisory, CVSS 3.1): Network (remote) · No privileges required · No user interaction required
What an attacker can do
Remote attackers can execute arbitrary commands via a crafted serialized Java object, related to the Apache Commons Collections (ACC) library. NVD’s CVSS 3.1 assessment (base score 9.8/10) rates confidentiality, integrity and availability impact as high. Source advisory’s CVSS 3.1 assessment (base score 9.8/10) rates confidentiality, integrity and availability impact as high.
- CWE
- CWE-502
- CCR priority
- 43.9 /100 (P3)
- CVSS 3.1
- 9.8 /10 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H · NVD
- EPSS
- 0.18618 · percentile 0.9719 · 2026-10-06
- KEV
- no
Provenance
- NVD CVE API 2.0 · Source record · observed 2026-10-07 19:02:04.772962+00:00 UTC
Stable permalink: https://cybercodered.org/item/cve-cve-2015-6420.html