What is CVE-2021-1268?

CVE-2021-1268 is a high-severity vulnerability in Cisco Ios Xr Software, classified under CWE-1076. CVSS score: 7.4/10. Published 2021-02-04.

How severe is CVE-2021-1268?

High severity. CVSS v3 base score is 7.4 out of 10.

Vulnerability in Cisco Ios Xr Software

CVE-2021-1268

A vulnerability in the IPv6 protocol handling of the management interfaces of Cisco IOS XR Software could allow an unauthenticated, adjacent attacker to cause an IPv6 flood on the management interface network of an affected device. The vul…

EPSS: 0.005 (38.9th 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 Xr Software — versions n/a
Cisco Ios_xr — versions 7.3.0
Cisco Ncs_1001
Cisco Ncs_1002

Weakness classification (CWE)

CWE-1076

References

psirt@cisco.com (x_refsource_CISCO, vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2021-1268?: CVE-2021-1268 is a high-severity vulnerability in Cisco Ios Xr Software, classified under CWE-1076. CVSS score: 7.4/10. Published 2021-02-04.
How severe is CVE-2021-1268?: High severity. CVSS v3 base score is 7.4 out of 10.