CVE-2022-20821 · netVigilance record NV22-0372
Cisco IOS XR Open Port
past due
What to do
Apply updates per vendor instructions.
CISA deadline 2022-06-13 · passed 4 years 2 months ago · applies to US federal civilian agencies; used elsewhere as a reference SLA
What happened
Cisco IOS XR software health check opens TCP port 6379 by default on activation. An attacker can connect to the Redis instance on the open port and allow access to the Redis instance that is running within the NOSi container.
Who is affected
Cisco IOS XR. Affected version ranges are listed in the vendor advisory and the NVD entry linked under Sources.
Weakness class: CWE-923.
Timeline
- Added to CISA KEVExploitation in the wild confirmed by CISA
- CISA remediation deadlinepassed 4 years 2 months ago
Sources
- NVD entry for CVE-2022-20821 nvd.nist.gov/vuln/detail/CVE-2022-20821
- CISA Known Exploited Vulnerabilities catalog www.cisa.gov/known-exploited-vulnerabilities-catalog
- nvd.nist.gov nvd.nist.gov/vuln/detail/CVE-2022-20821