How severe is CVE-2016-6447?

CVE-2016-6447 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2016-6447 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (86th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-6447?

CVE-2016-6447 primarily affects Cisco Meeting App. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2016-6447?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2016-6447 published?

CVE-2016-6447 was published on 2016-11-03 and last updated on 2026-06-17.

CVE-2016-6447

CVE-2016-6447 is a critical-severity vulnerability in Cisco Meeting App with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-119.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 3% (86th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Cisco Meeting App
Published: 2016-11-03
Last modified: 2026-06-17

Description

A vulnerability in Cisco Meeting Server and Meeting App could allow an unauthenticated, remote attacker to execute arbitrary code on an affected system. This vulnerability affects the following products: Cisco Meeting Server releases prior to 2.0.1, Acano Server releases prior to 1.8.16 and prior to 1.9.3, Cisco Meeting App releases prior to 1.9.8, Acano Meeting Apps releases prior to 1.8.35. More Information: CSCva75942 CSCvb67878. Known Affected Releases: 1.81.92.0.

Frequently asked questions

What is CVE-2016-6447?: A vulnerability in Cisco Meeting Server and Meeting App could allow an unauthenticated, remote attacker to execute arbitrary code on an affected system. This vulnerability affects the following products: Cisco Meeting Server releases prior to 2.0.1, Acano Server releases prior to 1.8.16 and prior to 1.9.3, Cisco Meeting App releases prior to 1.9.8, Acano Meeting Apps releases prior to 1.8.35. More Information: CSCva75942 CSCvb67878. Known Affected Releases: 1.81.92.0.
How severe is CVE-2016-6447?: CVE-2016-6447 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2016-6447 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (86th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-6447?: CVE-2016-6447 primarily affects Cisco Meeting App. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2016-6447?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2016-6447 published?: CVE-2016-6447 was published on 2016-11-03 and last updated on 2026-06-17.

References

Affected products (5)

cpe:2.3:a:cisco:meeting_app:1.8.0:*:*:*:*:*:*:*
cpe:2.3:a:cisco:meeting_app:1.9.0:*:*:*:*:*:*:*
cpe:2.3:a:cisco:meeting_server:1.8_base:*:*:*:*:*:*:*
cpe:2.3:a:cisco:meeting_server:1.9.0:*:*:*:*:*:*:*
cpe:2.3:a:cisco:meeting_server:2.0.0:*:*:*:*:*:*:*

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