Vulnerability in Cisco iOS
CVE-2023-20080
A vulnerability in the IPv6 DHCP version 6 (DHCPv6) relay and server features of Cisco IOS and IOS XE Software could allow an unauthenticated, remote attacker to trigger a denial of service (DoS) condition. This vulnerability is due to insufficient validation of data boundaries. An attacker could exploit this vulnerability by sending crafted DHCPv6 messages to an affected device. A successful exploit could allow the attacker to cause the device to reload unexpectedly.
EPSS: 0.010 (59.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H.
Affected products
- Cisco Ios — versions n/a
- Cisco Ios — versions 15.5\(3\)s1a, 15.5\(3\)m7, 15.2\(4\)ea5
- Cisco Ios_xe — versions 3.3.0xo, 3.3.1xo, 3.3.2xo
Weakness classification (CWE)
References
- psirt@cisco.com (vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2023-20080?
- CVE-2023-20080 is a high-severity vulnerability in Cisco iOS, classified under Improper Validation of Array Index. CVSS score: 8.6/10. Published 2023-03-23.
- How severe is CVE-2023-20080?
- High severity. CVSS v3 base score is 8.6 out of 10.