Risk | Low |
Patch available | YES |
Number of vulnerabilities | 1 |
CVE-ID | CVE-2021-1436 |
CWE-ID | CWE-22 |
Exploitation vector | Local |
Public exploit | N/A |
Vulnerable software Subscribe |
Cisco IOS XE SD-WAN Other software / Other software solutions Cisco 1000 Series Integrated Services Routers Hardware solutions / Routers & switches, VoIP, GSM, etc 4000 Series Integrated Services Routers Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco ASR 1000 Series Aggregation Services Routers Hardware solutions / Routers & switches, VoIP, GSM, etc Cloud Services Router 1000V Series Hardware solutions / Routers & switches, VoIP, GSM, etc |
Vendor | Cisco Systems, Inc |
Security Bulletin
This security bulletin contains one low risk vulnerability.
EUVDB-ID: #VU51782
Risk: Low
CVSSv3.1: 3.9 [CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2021-1436
CWE-ID:
CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Exploit availability: No
DescriptionThe vulnerability allows a local user to perform directory traversal attacks.
The vulnerability exists due to input validation error when processing directory traversal sequences in the CLI. A local administrator can send a specially crafted HTTP request and view arbitrary files on the system.
MitigationInstall update from vendor's website.
Vulnerable software versionsCisco IOS XE SD-WAN: 16.12
Cisco 1000 Series Integrated Services Routers: All versions
4000 Series Integrated Services Routers: All versions
Cisco ASR 1000 Series Aggregation Services Routers: All versions
Cloud Services Router 1000V Series: All versions
External linksQ & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.