How severe is CVE-2017-3792?

CVE-2017-3792 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-2017-3792 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 7% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-3792?

CVE-2017-3792 primarily affects Cisco Telepresence Mcu Software. In total, 14 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2017-3792?

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-2017-3792 published?

CVE-2017-3792 was published on 2017-02-01 and last updated on 2026-06-17.

CVE-2017-3792

CVE-2017-3792 is a critical-severity vulnerability in Cisco Telepresence Mcu Software 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-20.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 10.0
EPSS exploit prediction: 7% (93rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Cisco Telepresence Mcu Software
Published: 2017-02-01
Last modified: 2026-06-17

Description

A vulnerability in a proprietary device driver in the kernel of Cisco TelePresence Multipoint Control Unit (MCU) Software could allow an unauthenticated, remote attacker to execute arbitrary code or cause a denial of service (DoS) condition. The vulnerability is due to improper size validation when reassembling fragmented IPv4 or IPv6 packets. An attacker could exploit this vulnerability by sending crafted IPv4 or IPv6 fragments to a port receiving content in Passthrough content mode. An exploit could allow the attacker to overflow a buffer. If successful, the attacker could execute arbitrary code or cause a DoS condition on the affected system. Cisco TelePresence MCU platforms TelePresence MCU 5300 Series, TelePresence MCU MSE 8510 and TelePresence MCU 4500 are affected when running software version 4.3(1.68) or later configured for Passthrough content mode. Cisco has released software updates that address this vulnerability. Workarounds that address this vulnerability are not available, but mitigations are available. Cisco Bug IDs: CSCuu67675.

Frequently asked questions

What is CVE-2017-3792?: A vulnerability in a proprietary device driver in the kernel of Cisco TelePresence Multipoint Control Unit (MCU) Software could allow an unauthenticated, remote attacker to execute arbitrary code or cause a denial of service (DoS) condition. The vulnerability is due to improper size validation when reassembling fragmented IPv4 or IPv6 packets. An attacker could exploit this vulnerability by sending crafted IPv4 or IPv6 fragments to a port receiving content in Passthrough content mode. An exploit could allow the attacker to overflow a buffer. If successful, the attacker could execute arbitrary code or cause a DoS condition on the affected system. Cisco TelePresence MCU platforms TelePresence MCU 5300 Series, TelePresence MCU MSE 8510 and TelePresence MCU 4500 are affected when running software version 4.3(1.68) or later configured for Passthrough content mode. Cisco has released software updates that address this vulnerability. Workarounds that address this vulnerability are not available, but mitigations are available. Cisco Bug IDs: CSCuu67675.
How severe is CVE-2017-3792?: CVE-2017-3792 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-2017-3792 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 7% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-3792?: CVE-2017-3792 primarily affects Cisco Telepresence Mcu Software. In total, 14 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2017-3792?: 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-2017-3792 published?: CVE-2017-3792 was published on 2017-02-01 and last updated on 2026-06-17.

References

Affected products (14)

cpe:2.3:a:cisco:telepresence_mcu_software:4.3_\(1.68\):*:*:*:*:*:*:*
cpe:2.3:a:cisco:telepresence_mcu_software:4.3_\(2.18\):*:*:*:*:*:*:*
cpe:2.3:a:cisco:telepresence_mcu_software:4.3_\(2.30\):*:*:*:*:*:*:*
cpe:2.3:a:cisco:telepresence_mcu_software:4.3_\(2.32\):*:*:*:*:*:*:*
cpe:2.3:a:cisco:telepresence_mcu_software:4.4_\(3.42\):*:*:*:*:*:*:*
cpe:2.3:a:cisco:telepresence_mcu_software:4.4_\(3.49\):*:*:*:*:*:*:*
cpe:2.3:a:cisco:telepresence_mcu_software:4.4_\(3.54\):*:*:*:*:*:*:*
cpe:2.3:a:cisco:telepresence_mcu_software:4.4_\(3.57\):*:*:*:*:*:*:*
cpe:2.3:a:cisco:telepresence_mcu_software:4.4_\(3.67\):*:*:*:*:*:*:*
cpe:2.3:a:cisco:telepresence_mcu_software:4.5_\(1.45\):*:*:*:*:*:*:*
cpe:2.3:a:cisco:telepresence_mcu_software:4.5_\(1.55\):*:*:*:*:*:*:*
cpe:2.3:a:cisco:telepresence_mcu_software:4.5_\(1.71\):*:*:*:*:*:*:*
cpe:2.3:a:cisco:telepresence_mcu_software:4.5_\(1.72\):*:*:*:*:*:*:*
cpe:2.3:a:cisco:telepresence_mcu_software:4.5_\(1.85\):*:*:*:*:*:*:*

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