Medium severity5.9NVD Advisory· Published Dec 26, 2015· Updated Jun 17, 2026

CVE-2015-6409

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 Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Cisco Systems, Inc./Jabber2 versions
cpe:2.3:a:cisco:jabber:10.6\(2\):*:*:*:*:windows:*:*+ 1 more
- cpe:2.3:a:cisco:jabber:10.6\(2\):*:*:*:*:windows:*:*
- (no CPE)range: 10.6.x, 11.0.x, 11.1.x

Patches

Vulnerability mechanics

References

tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20151224-jabnvdVendor Advisory
www.synacktiv.com/ressources/cisco_jabber_starttls_downgrade.pdfnvdThird Party Advisory
www.securityfocus.com/bid/79678nvd
www.securitytracker.com/id/1034540nvd

News mentions

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cvss	0.384
epss	0.001
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000