CVE-2021-1384IOS Xe Command Injection
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.
Published Mar 24, 2021 · Updated Nov 21, 2024
Key Facts
Patch immediately- CVE-2021-1384 is a high-severity vulnerability (CVSS 7.2 v3.1) affecting IOS Xe (Cisco), Cisco IOS XE Software.
- It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
- EPSS estimates a 35% probability of exploitation in the next 30 days.
- Fixed versions are available, including IOS Xe 16.6.9.
- Brandefense priority: patch immediately, because public exploit code exists for a high-severity flaw.
Scores
CVSS v3.1
7.2
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
35%
Higher than 98.4% of all scored CVEs
Exploit maturity
Proof of concept
ATLAS score
50/100
Publication score, see How it works
Exploitation Verdict
KEV listed
Not listed
Federal due date
None
No federal due date
Ransomware use
Not reported
Attributed actors
None named
Exploit & Defence Guidance
Exploit maturity
Proof of concept
Public exploit code
1
Proof-of-concept links
In-the-wild evidence
0
Reports of active use
Advisories And Exploit References
Description
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.
Affected Products
3 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| IOS XeCisco | 17.5.0 | 16.6.9 |
| Cisco IOS XE Software | >= n/a | n/a |
Patched Releases
IOS Xe
16.6.9
Timeline
Publicly disclosed
Mar 24, 2021
Last updated
Nov 21, 2024
Weakness Type
- CWE-77 Improper Neutralization of Special Elements used in a Command ('Command Injection')
- CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
FAQ
Common Questions.
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.
Affected: IOS Xe (Cisco) versions 17.5.0; Cisco IOS XE Software versions >= n/a. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
Fixed versions are available, including IOS Xe 16.6.9.
Brandefense priority: patch immediately, because public exploit code exists for a high-severity flaw.
Is CVE-2021-1384 On Your Attack Surface?
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