RCE in Cisco iOS Xe Software
CVE-2021-1384
A vulnerability in Cisco IOx application hosting environment of Cisco IOS XE Software could allow an authenticated, remote attacker to inject commands into the underlying operating system as the root user. This vulnerability is due to incomplete validation of fields in the application packages loaded onto IOx. An attacker could exploit this vulnerability by creating a crafted application .tar file and loading it onto the device. A successful exploit could allow the attacker to perform command injection into the underlying operating system as the root user.
Vulnerability class: Command Injection (OS Command Injection)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.354 (98.4th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 98th percentile — 98.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.354 · newest: 0.354 · change: 0.000
Affected products
- Cisco iOS Xe Software
- Cisco iOS Xe — versions 17.5.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iox-cmdi… (vendor-advisory, Vendor Advisory)
- github.com/orangecertcc/security-research/security/advisories/GHSA-h332-fj6p-22… (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-1384?
- CVE-2021-1384 is a medium-severity vulnerability in Cisco iOS Xe Software, classified under Command Injection. CVSS score: 6.5/10. Published 2021-03-24.
- How severe is CVE-2021-1384?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2021-1384 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.