VIR Vulnerability Intelligence Relay

CVE-2017-3792

critical
Published 2017-02-01 · Modified 2026-05-13
💬 Discuss on Community ✚ Propose mitigation
CVSS v3
9.8
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4 NEW
—
not yet in upstream
VIR risk
9.8

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.

Predictions

Exploit likelihood
97%
Patch ETA
—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

Application impact
VendorProductVersionsFixed
cisco ciscotelepresence_mcu_software4.3_\(1.68\)
cisco ciscotelepresence_mcu_software4.3_\(2.18\)
cisco ciscotelepresence_mcu_software4.3_\(2.30\)
cisco ciscotelepresence_mcu_software4.3_\(2.32\)
cisco ciscotelepresence_mcu_software4.4_\(3.42\)
cisco ciscotelepresence_mcu_software4.4_\(3.49\)
cisco ciscotelepresence_mcu_software4.4_\(3.54\)
cisco ciscotelepresence_mcu_software4.4_\(3.57\)
cisco ciscotelepresence_mcu_software4.4_\(3.67\)
cisco ciscotelepresence_mcu_software4.5_\(1.45\)
cisco ciscotelepresence_mcu_software4.5_\(1.55\)
cisco ciscotelepresence_mcu_software4.5_\(1.71\)
cisco ciscotelepresence_mcu_software4.5_\(1.72\)
cisco ciscotelepresence_mcu_software4.5_\(1.85\)

References

CWEs

CWE-20

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.