Cisco IOS, XR, and XE Software Buffer Overflow Vulnerability
CISA lists this Cisco IOS, XR, and XE Software vulnerability as known exploited. The vendor's advisory has the fixed versions.
CISA catalog record
Format string vulnerability in the Link Layer Discovery Protocol (LLDP) subsystem of Cisco IOS Software, Cisco IOS XE Software, and Cisco IOS XR Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition or execute arbitrary code with elevated privileges on an affected device.
- Product
- IOS, XR, and XE Software
- Added to KEV
- 3 Mar 2022
- Federal remediation due
- 17 Mar 2022
- Known ransomware use
- Not reported
What changed
First observed 14 Oct 2026No field changes in the recorded history.
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