MEDIUM
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
Published Dec 26, 2015
5.9
MEDIUMCVSS 3.0
EPSS 1.34%
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.
Affected products
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
5.9 MEDIUM NVD
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack Vector Network
Attack Complexity High
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact High
Integrity Impact None
Availability Impact None
4.3 MEDIUM NVD
AV:N/AC:M/Au:N/C:P/I:N/A:N
Access Vector Network
Access Complexity Medium
Authentication None
Confidentiality Impact Partial
Integrity Impact None
Availability Impact None
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
1.34% 0.01341
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.01341
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 | 1.34% (0.01341) | 70.30th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.34% (0.01341) | 67.54th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.46% (0.00460) | 62.04th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.12% (0.00119) | 47.63th | v3 (v2023.03.01) |
| Jun 13, 2024 | 0.12% (0.00119) | 46.21th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.12% (0.00119) | 44.20th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.02% (0.01018) | 40.69th | v2 (v2022.01.01) |
| Sep 10, 2022 | 1.02% (0.01018) | 38.88th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.02% (0.01018) | 36.86th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.02% (0.01018) | 19.50th | v2 (v2022.01.01) |
Weaknesses (1)
References (4)
- http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20151224-jab vendor-advisoryx_refsource_CISCOVendor Advisory
- http://www.securityfocus.com/bid/79678 vdb-entryx_refsource_BID
- http://www.securitytracker.com/id/1034540 vdb-entryx_refsource_SECTRACK
- http://www.synacktiv.com/ressources/cisco_jabber_starttls_downgrade.pdf x_refsource_MISCThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20151224-jab | vendor-advisoryx_refsource_CISCOVendor Advisory | |
| http://www.securityfocus.com/bid/79678 | vdb-entryx_refsource_BID | |
| http://www.securitytracker.com/id/1034540 | vdb-entryx_refsource_SECTRACK | |
| http://www.synacktiv.com/ressources/cisco_jabber_starttls_downgrade.pdf | x_refsource_MISCThird Party Advisory |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner cisco
Published Dec 26, 2015
Updated Aug 6, 2024
Reserved Aug 17, 2015
Link CVE-2015-6409
CISA Vulnrichment
Updated n/a