What is CVE-2020-26070?

CVE-2020-26070 is a high-severity vulnerability in Cisco Asr 9000v, classified under Improper Resource Shutdown or Release. CVSS score: 8.6/10. Published 2020-11-12.

How severe is CVE-2020-26070?

High severity. CVSS v3 base score is 8.6 out of 10.

Vulnerability in Cisco Asr 9000v

CVE-2020-26070

A vulnerability in the ingress packet processing function of Cisco IOS XR Software for Cisco ASR 9000 Series Aggregation Services Routers could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to improper resource allocation when an affected device processes network traffic in software switching mode (punted). An attacker could exploit this vulnerability by sending specific streams of Layer 2 or Layer 3 protocol data units (PDUs) to an affected device. A successful exploit could cause the affected device to run out of buffer resources, which could make the device unable to process or forward traffic, resulting in a DoS condition. The device would need to be restarted to regain functionality.

EPSS: 0.019 (78.6th 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

Weakness classification (CWE)

CWE-404 — Improper Resource Shutdown or Release

References

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

Frequently asked questions

What is CVE-2020-26070?: CVE-2020-26070 is a high-severity vulnerability in Cisco Asr 9000v, classified under Improper Resource Shutdown or Release. CVSS score: 8.6/10. Published 2020-11-12.
How severe is CVE-2020-26070?: High severity. CVSS v3 base score is 8.6 out of 10.