CVSS 3.1
7.4 highCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:HCVE-2022-20915
High (7.4) in cisco ios xe. EPSS 0.3% chance of exploitation in the next 30 days.
A vulnerability in the implementation of IPv6 VPN over MPLS (6VPE) with Zone-Based Firewall (ZBFW) of Cisco IOS XE Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to improper error handling of an IPv6 packet that is forwarded from an MPLS and ZBFW-enabled interface in a 6VPE deployment. An attacker could exploit this vulnerability by sending a crafted IPv6 packet sourced from a device on the IPv6-enabled virtual routing and forwarding (VRF) interface through the affected device. A successful exploit could allow the attacker to reload the device, resulting in a DoS condition.
Severity
- EPSS
- 0.3% chance of exploitation in the next 30 days; higher than 23% of CVEs (scores of 2026-10-31)
- CWEs
- CWE-436, CWE-115
- Published
- Modified
- Record from
- the NVD, synced
Affected
- cisco:ios_xe