CVE-2016-6411 — Cisco Firepower Management Center and FireSIGHT System Software 6.0.1 mishandle comparisons between URLs and X.509 certificates, which allows remote attackers to bypass intended do-not-decrypt settings via a crafted URL, aka Bug ID CSCva50585

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HIGH

Cisco Firepower Management Center and FireSIGHT System Software 6.0.1 mishandle comparisons between URLs and X.509 certificates, which allows remote attackers to bypass intended do-not-decrypt settings via a crafted URL, aka Bug ID CSCva50585

Published Sep 24, 2016

7.5

HIGH

CVSS 3.0

EPSS 0.75%

Description

Cisco Firepower Management Center and FireSIGHT System Software 6.0.1 mishandle comparisons between URLs and X.509 certificates, which allows remote attackers to bypass intended do-not-decrypt settings via a crafted URL, aka Bug ID CSCva50585.

Affected products

Remediation

No remediation recorded yet.

Metrics

0.75% 0.00749

Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.

EPSS probability 0.00749

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 1, 2026	0.75% (0.00749)	53.24th	v5 (v2026.06.15)
Jun 15, 2026	0.75% (0.00749)	49.93th	v5 (v2026.06.15)
Mar 17, 2025	0.19% (0.00191)	38.81th	v4 (v2025.03.14)
Dec 12, 2024	0.14% (0.00144)	51.74th	v3 (v2023.03.01)
Jun 21, 2024	0.14% (0.00144)	50.44th	v3 (v2023.03.01)
Mar 7, 2023	0.14% (0.00144)	48.42th	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-20

Improper Input Validation

References (2)

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160921-fmc
vendor-advisoryx_refsource_CISCOVendor Advisory
http://www.securitytracker.com/id/1036877
vdb-entryx_refsource_SECTRACK

Link	Providers	Tags
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160921-fmc		vendor-advisoryx_refsource_CISCOVendor Advisory
http://www.securitytracker.com/id/1036877		vdb-entryx_refsource_SECTRACK

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner cisco

Published Sep 24, 2016

Updated Aug 6, 2024

Reserved Jul 26, 2016

Link CVE-2016-6411

CISA Vulnrichment

Updated n/a

NVD

Status Modified

Modified Jun 17, 2026

Link CVE-2016-6411

Red Hat

Severity n/a

Public date n/a

Links CVE-2016-6411