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.
Published 2021-02-04 17:15:15
Updated 2021-02-08 19:37:29
View at NVD,   CVE.org

Exploit prediction scoring system (EPSS) score for CVE-2021-1244

0.04%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 6 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2021-1244

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
4.6
MEDIUM AV:L/AC:L/Au:N/C:P/I:P/A:P
3.9
6.4
NIST
6.7
MEDIUM CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
0.8
5.9
Cisco Systems, Inc.
6.7
MEDIUM CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
0.8
5.9
NIST

CWE ids for CVE-2021-1244

References for CVE-2021-1244

Products affected by CVE-2021-1244

  • Cisco » Ios Xr
    Versions before (<) 7.0.12
    cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*
    When used together with: Cisco » 8201 » Version: N/A
    When used together with: Cisco » 8202 » Version: N/A
    When used together with: Cisco » 8808 » Version: N/A
    When used together with: Cisco » 8812 » Version: N/A
    When used together with: Cisco » 8818 » Version: N/A
  • Cisco » Ios Xr
    Versions before (<) 7.2.1
    cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*
    When used together with: Cisco » Ncs 540 » Version: N/A
  • Cisco » Ios Xr
    Versions from including (>=) 7.1.0 and before (<) 7.2.1
    cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*
    When used together with: Cisco » 8201 » Version: N/A
    When used together with: Cisco » 8202 » Version: N/A
    When used together with: Cisco » 8808 » Version: N/A
    When used together with: Cisco » 8812 » Version: N/A
    When used together with: Cisco » 8818 » Version: N/A
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