New! Vulnerability Priority Rating (VPR)
Tenable calculates a dynamic VPR for every vulnerability. VPR combines vulnerability information with threat intelligence and machine learning algorithms to predict which vulnerabilities are most likely to be exploited in attacks. Read more about what VPR is and how it's different from CVSS.
VPR Score: 5.9
Synopsis
The remote device is missing a vendor-supplied security patch
Description
According to its self-reported version, IOS-XR is affected by a remote code execution vulnerability in the enhanced Preboot eXecution Environment (PXE) boot loader due to a failure to verify commands issued during a network boot. An unauthenticated, remote attacker can exploit this to execute unsigned code on an affected device.
Please see the included Cisco BIDs and Cisco Security Advisory for more information.
Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
Solution
Upgrade to the relevant fixed version referenced in Cisco bug IDs CSCvi82550, CSCvq23340, CSCvq31064, CSCvu31574