High severity7.7NVD Advisory· Published Sep 23, 2021· Updated Jun 17, 2026
CVE-2021-1623
CVE-2021-1623
Description
A vulnerability in the Simple Network Management Protocol (SNMP) punt handling function of Cisco cBR-8 Converged Broadband Routers could allow an authenticated, remote attacker to overload a device punt path, resulting in a denial of service (DoS) condition. This vulnerability is due to the punt path being overwhelmed by large quantities of SNMP requests. An attacker could exploit this vulnerability by sending a large number of SNMP requests to an affected device. A successful exploit could allow the attacker to overload the device punt path, resulting in a DoS condition.
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Affected products
3- Range: n/a
Patches
Vulnerability mechanics
References
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