CVE-2021-1136

CVSS V2 Medium 4.6 CVSS V3 Medium 6.7
Description
Multiple vulnerabilities in Cisco Network Convergence System (NCS) 540 Series Routers, only when running Cisco IOS XR NCS540L software images, and Cisco IOS XR Software for the Cisco 8000 Series Routers could allow an authenticated, local attacker to execute unsigned code during the boot process on an affected device. For more information about these vulnerabilities, see the Details section of this advisory.
Overview
  • CVE ID
  • CVE-2021-1136
  • Assigner
  • ykramarz@cisco.com
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2021-02-04T17:15:14
  • Last Modified Date
  • 2021-02-08T19:59:42
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
AND
cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:* 1 OR 7.0.12
cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:* 1 OR 7.1.0 7.2.1
cpe:2.3:h:cisco:8201:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:8202:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:8808:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:8812:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:8818:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:* 1 OR 7.2.1
cpe:2.3:h:cisco:ncs_540:-:*:*:*:*:*:*:* 0 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:L/AC:L/Au:N/C:P/I:P/A:P
  • Access Vector
  • LOCAL
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • PARTIAL
  • Integrity Impact
  • PARTIAL
  • Availability Impact
  • PARTIAL
  • Base Score
  • 4.6
  • Severity
  • MEDIUM
  • Exploitability Score
  • 3.9
  • Impact Score
  • 6.4
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
  • Attack Vector
  • LOCAL
  • Attack Compatibility
  • LOW
  • Privileges Required
  • HIGH
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • HIGH
  • Availability Impact
  • HIGH
  • Base Score
  • 6.7
  • Base Severity
  • MEDIUM
  • Exploitability Score
  • 0.8
  • Impact Score
  • 5.9
History
Created Old Value New Value Data Type Notes
2022-05-10 07:23:59 Added to TrackCVE
2022-12-05 21:21:39 psirt@cisco.com ykramarz@cisco.com CVE Assigner updated
2022-12-05 21:21:39 2021-02-04T17:15Z 2021-02-04T17:15:14 CVE Published Date updated
2022-12-05 21:21:39 2021-02-08T19:59:42 CVE Modified Date updated
2022-12-05 21:21:39 Analyzed Vulnerability Status updated