Buffer overflow in Cisco iOS Xe Software
CVE-2021-1352
A vulnerability in the DECnet Phase IV and DECnet/OSI protocol processing of Cisco IOS XE Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to insufficient input validation of DECnet traffic that is received by an affected device. An attacker could exploit this vulnerability by sending DECnet traffic to an affected device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition.
EPSS: 0.004 (32.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.4 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H.
Affected products
- Cisco Ios Xe Software — versions n/a
- Cisco Ios_xe — versions 16.4.1, 16.4.2, 16.4.3
Weakness classification (CWE)
References
- psirt@cisco.com (x_refsource_CISCO, vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2021-1352?
- CVE-2021-1352 is a high-severity vulnerability in Cisco iOS Xe Software, classified under CWE-823. CVSS score: 7.4/10. Published 2021-03-24.
- How severe is CVE-2021-1352?
- High severity. CVSS v3 base score is 7.4 out of 10.