Vulnerability Details : CVE-2021-1436

A vulnerability in the CLI of Cisco IOS XE SD-WAN Software could allow an authenticated, local attacker to conduct path traversal attacks and obtain read access to sensitive files on an affected system. This vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by sending a crafted request to an affected system. A successful exploit could allow the attacker to view arbitrary files on the affected system.
Published 2021-03-24 20:15:15
Updated 2021-03-29 19:56:57
Source Cisco Systems, Inc.
View at NVD,   CVE.org
Vulnerability category: Directory traversal

Exploit prediction scoring system (EPSS) score for CVE-2021-1436

Probability of exploitation activity in the next 30 days: 0.04%

Percentile, the proportion of vulnerabilities that are scored at or less: ~ 8 % EPSS Score History EPSS FAQ

CVSS scores for CVE-2021-1436

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source
4.7
 MEDIUM AV:L/AC:M/Au:N/C:C/I:N/A:N
3.4
6.9
 NIST
4.4
 MEDIUM CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N
0.8
3.6
 Cisco Systems, Inc.
4.4
 MEDIUM CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
0.8
3.6
 NIST

CWE ids for CVE-2021-1436

  • The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.
    Assigned by: ykramarz@cisco.com (Primary)

References for CVE-2021-1436

Products affected by CVE-2021-1436

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