CVE-2015-4306 — The web framework in Cisco Prime Collaboration Assurance before 10.5.1.53684-1 allows remote authenticated users to bypass intended login-session read restrictions, and impersonate administrators of arbitrary tenant domains, by discovering a session identifier and constructing a crafted URL, aka Bug IDs CSCus88343 and CSCus88334

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HIGH

The web framework in Cisco Prime Collaboration Assurance before 10.5.1.53684-1 allows remote authenticated users to bypass intended login-session read restrictions, and impersonate administrators of arbitrary tenant domains, by discovering a session identifier and constructing a crafted URL, aka Bug IDs CSCus88343 and CSCus88334

Published Sep 20, 2015

8.5

HIGH

CVSS 2.0

EPSS 2.28%

Description

The web framework in Cisco Prime Collaboration Assurance before 10.5.1.53684-1 allows remote authenticated users to bypass intended login-session read restrictions, and impersonate administrators of arbitrary tenant domains, by discovering a session identifier and constructing a crafted URL, aka Bug IDs CSCus88343 and CSCus88334.

Affected products

Remediation

No remediation recorded yet.

Metrics

2.28% 0.02279

Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 3, 2026.

EPSS probability 0.02279

Score over time

2022–2026

EPSS v2
EPSS v3
EPSS v4
EPSS v5

Percentile over time

EPSS v2
EPSS v3
EPSS v4
EPSS v5

Table of values (10 key points)

Flat stretches are collapsed; showing up to 120 newest points.

Date	Score	Percentile	Model
Oct 3, 2026	2.28% (0.02279)	82.53th	v5 (v2026.06.15)
Jun 15, 2026	2.28% (0.02279)	80.79th	v5 (v2026.06.15)
Mar 17, 2025	0.34% (0.00343)	54.70th	v4 (v2025.03.14)
Dec 12, 2024	0.16% (0.00158)	53.57th	v3 (v2023.03.01)
Jun 28, 2024	0.16% (0.00158)	52.49th	v3 (v2023.03.01)
Mar 7, 2023	0.16% (0.00158)	50.48th	v3 (v2023.03.01)
Mar 6, 2023	1.05% (0.01055)	52.13th	v2 (v2022.01.01)
Sep 17, 2022	1.05% (0.01055)	50.47th	v2 (v2022.01.01)
Apr 1, 2022	1.05% (0.01055)	48.43th	v2 (v2022.01.01)
Feb 4, 2022	1.05% (0.01055)	27.52th	v2 (v2022.01.01)

Weaknesses (1)

CWE-264

References (2)

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20150916-pca
vendor-advisoryx_refsource_CISCOVendor Advisory
http://www.securitytracker.com/id/1033581
vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry

Link	Providers	Tags
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20150916-pca		vendor-advisoryx_refsource_CISCOVendor Advisory
http://www.securitytracker.com/id/1033581		vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner cisco

Published Sep 20, 2015

Updated Aug 6, 2024

Reserved Jun 4, 2015

Link CVE-2015-4306

CISA Vulnrichment

Updated n/a

NVD

Status Modified

Modified Jun 17, 2026

Link CVE-2015-4306

Red Hat

Severity n/a

Public date n/a

Links CVE-2015-4306