THREATPORT/VULNERABILITY/CVE-2021-1384
MEDIUM SEVERITY

CVE-2021-1384

Ios Xe vulnerability

CVSS
6.5
EPSS
35.4%
EPSS pct
98th
Exploited
No known
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 vendor
Cisco
Affected product
Ios Xe
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
Weakness type (CWE)
Published
2021-03-24

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring high privileges, no user interaction. Successful exploitation leads to high impact to confidentiality, high impact to integrity.

Its EPSS score of 35.4% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 98% of all scored CVEs.

Check your external exposure to CVE-2021-1384

  • Confirm whether Cisco Ios Xe is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2021-1384.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2021-1384

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2021-1384 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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