CVE-2016-6445

mediumpriority · track · 37EPSS 0.025 · 85 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

2.51% (85th) EPSS

CVSS 6.4 · medium

Is it mine?

10 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-28

A vulnerability in the Extensible Messaging and Presence Protocol (XMPP) service of the Cisco Meeting Server (CMS) before 2.0.6 and Acano Server before 1.8.18 and 1.9.x before 1.9.6 could allow an unauthenticated, remote attacker to masquerade as a legitimate user. This vulnerability is due to the XMPP service incorrectly processing a deprecated authentication scheme. A successful exploit could allow an attacker to access the system as another user.

cvss

Technical severity, 0–10. One row per scoring source.

9.1

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–critical · 6.4–9.1

v2.06.4mediumAV:N/AC:L/Au:N/C:P/I:P/A:Nprimary · NVD / NIST USexploitability 10 · impact 4.9

v3.09.1criticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Nprimary · NVD / NIST USexploitability 3.9 · impact 5.2

v3.08.3highCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-20USprimary

affected products (10)

Products and version ranges known to be affected.

n/a Cisco Meeting Server (CMS) before 2.0.6 and Acano Server before 1.8.18 and 1.9.x before 1.9.6≤ Cisco Meeting Server (CMS) before 2.0.6 and Acano Server before 1.8.18 and 1.9.x before 1.9.6enisa_euvdEU
cisco meeting server= 1.8.15nvdUScpe:2.3:a:cisco:meeting_server:*:*:*:*:*:*:*:*
cisco meeting server= 1.8_basenvdUScpe:2.3:a:cisco:meeting_server:*:*:*:*:*:*:*:*
cisco meeting server= 1.9.0nvdUScpe:2.3:a:cisco:meeting_server:*:*:*:*:*:*:*:*
cisco meeting server= 1.9.2nvdUScpe:2.3:a:cisco:meeting_server:*:*:*:*:*:*:*:*
cisco meeting server= 2.0.0nvdUScpe:2.3:a:cisco:meeting_server:*:*:*:*:*:*:*:*
cisco meeting server= 2.0.1nvdUScpe:2.3:a:cisco:meeting_server:*:*:*:*:*:*:*:*
cisco meeting server= 2.0.3nvdUScpe:2.3:a:cisco:meeting_server:*:*:*:*:*:*:*:*
cisco meeting server= 2.0.4nvdUScpe:2.3:a:cisco:meeting_server:*:*:*:*:*:*:*:*
cisco meeting server= 2.0.5nvdUScpe:2.3:a:cisco:meeting_server:*:*:*:*:*:*:*:*

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd NVD CVE.org MITRE

published 2016-10-27modified 2026-06-17

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+25198 more

references (8)

External citations — patches, advisories, analysis.

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