CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:N/I:N/A:C
EPSS
Percentile
80.0%
A vulnerability in the kernel timers in Cisco IOS Software could allow an unauthenticated, remote attacker to trigger a reload of the affected device.
The vulnerability is due to improper management of kernel timers. An attacker could exploit this vulnerability by sending crafted traffic, causing updates to timers used by the Zone-Based Firewall feature.
Cisco has confirmed the vulnerability in a security notice and released software updates.
To exploit this vulnerability, an attacker may need access to trusted, internal networks behind a firewall to send crafted traffic to the targeted device. This access requirement may reduce the likelihood of a successful exploit.