CVE-2015-6409

5.9 MEDIUM

Published: December 26, 2015 Modified: May 06, 2026

Description

Cisco Jabber 10.6.x, 11.0.x, and 11.1.x on Windows allows man-in-the-middle attackers to conduct STARTTLS downgrade attacks and trigger cleartext XMPP sessions via unspecified vectors, aka Bug ID CSCuw87419.

AI Explanation

Get an AI-powered plain-language explanation of this vulnerability and remediation steps.

CVSS v3.x Details

0.0 Low Medium High Critical 10.0

Vector String

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20151224-jab

Source: psirt@cisco.com

Vendor Advisory

http://www.securityfocus.com/bid/79678

Source: psirt@cisco.com

http://www.securitytracker.com/id/1034540

Source: psirt@cisco.com

http://www.synacktiv.com/ressources/cisco_jabber_starttls_downgrade.pdf

Source: psirt@cisco.com

Third Party Advisory

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20151224-jab

Source: af854a3a-2127-422b-91ae-364da2661108

Vendor Advisory

http://www.securityfocus.com/bid/79678

Source: af854a3a-2127-422b-91ae-364da2661108

http://www.securitytracker.com/id/1034540

Source: af854a3a-2127-422b-91ae-364da2661108

http://www.synacktiv.com/ressources/cisco_jabber_starttls_downgrade.pdf

Source: af854a3a-2127-422b-91ae-364da2661108

Third Party Advisory

8 reference(s) from NVD

Quick Stats

CVSS v3 Score

5.9 / 10.0

EPSS (Exploit Probability)

0.3%

49th percentile

Exploitation Status

Not in CISA KEV

Weaknesses (CWE)

CWE-200

Affected Vendors

cisco

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