CVE-2015-6420

highpriority · attend · 54EPSS 0.152 · 97 %ileexploit · PoCDEEURUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

1 exploit · PoC

Likely / severe?

15.2% (97th) EPSS

CVSS 7.5 · high

Is it mine?

36 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

Serialized-object interfaces in certain Cisco Collaboration and Social Media; Endpoint Clients and Client Software; Network Application, Service, and Acceleration; Network and Content Security Devices; Network Management and Provisioning; Routing and Switching - Enterprise and Service Provider; Unified Computing; Voice and Unified Communications Devices; Video, Streaming, TelePresence, and Transcoding Devices; Wireless; and Cisco Hosted Services products allow remote attackers to execute arbitrary commands via a crafted serialized Java object, related to the Apache Commons Collections (ACC) library.

cvss

Technical severity, 0–10. One row per scoring source.

9.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 7.5–9.8

v2.07.5highAV:N/AC:L/Au:N/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 10 · impact 6.4

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 5.9

v3.18.8highAV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondaryexploitability 3.9 · impact 5.9

v3.19.3criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Psecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: yes · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-502USprimaryCWE-502USCWE-502US

exploits (1)

Public proof-of-concept and weaponised exploit code.

Leeziao/CVE-2015-6420Leeziao/CVE-2015-6420PoC · poc_in_github

affected products (36)

Products and version ranges known to be affected.

IBM InfoSphere Information Server 11.7all versionscert_bundDEcpe:/a:ibm:infosphere_information_server:11.7
IBM QRadar SIEMall versionscert_bundDEcpe:/a:ibm:qradar_siem:-
IBM Tivoli Business Service Managerall versionscert_bundDEcpe:/a:ibm:tivoli_business_service_manager:-
n/a n/a≤ n/aenisa_euvdEU
Apache Software Foundation Commons Collections≤ 4.0fstec_bduRU
Apache Software Foundation Commons Collections≤ 3.2.1fstec_bduRU
Cisco Systems Inc. Cisco Cloud Email Securityall versionsfstec_bduRU
Cisco Systems Inc. Cisco Cloud Web Securityall versionsfstec_bduRU
Cisco Systems Inc. Cisco Emergency Responderall versionsfstec_bduRU
Cisco Systems Inc. Cisco Hosted Collaboration Mediation Fulfillmentall versionsfstec_bduRU
Cisco Systems Inc. Cisco MediaSenseall versionsfstec_bduRU
Cisco Systems Inc. Cisco Mobility Services Engineall versionsfstec_bduRU
Cisco Systems Inc. Cisco Prime Homeall versionsfstec_bduRU
Cisco Systems Inc. Cisco Prime License Managerall versionsfstec_bduRU
Cisco Systems Inc. Cisco Registered Envelope Serviceall versionsfstec_bduRU
Cisco Systems Inc. Cisco Security Managerall versionsfstec_bduRU
Cisco Systems Inc. Cisco Smart Net Total Careall versionsfstec_bduRU
Cisco Systems Inc. Cisco Video Distribution Suite for Internet Streamingall versionsfstec_bduRU
Cisco Systems Inc. Cisco WebEx Meetings Server≤ 2.0fstec_bduRU
Cisco Systems Inc. Cisco WebEx Meetings Server≤ 1.0fstec_bduRU

showing 20 of 36

advisories (2)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2022-1738IBM InfoSphere Information Server: Mehrere SchwachstellenDeutsch2022-10-16csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in IBM InfoSphere Information Server ausnutzen, um seine Privilegien zu erweitern, beliebigen Programmcode auszuführen, einen Cross-Site-Scripting-Angriff durchzuführen, Informationen offenzulegen, einen Denial of Service Zustand herbeizuführen, Dateien zu manipulieren oder Sicherheitsvorkehrungen zu umgehen.
GHSA-6hgm-866r-3cjvInsecure Deserialization in Apache Commons Collection2020-06-15ghsa · osvUS
Serialized-object interfaces in Java applications using the Apache Commons Collections (ACC) library may allow remote attackers to execute arbitrary commands via a crafted serialized Java object.

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cert_bund osv NVD CVE.org MITRE

published 2015-12-15modified 2026-10-07

related (3,744)

Related entries.

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+3739 more

references (38)

External citations — patches, advisories, analysis.

scry

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