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CVE-2023-20076

28
FAUCET Score

CVE-2023-20076 is a high-severity vulnerability in the Cisco IOx application hosting environment, affecting Cisco industrial appliances. It allows an authenticated, remote attacker to execute arbitrary commands as root on the underlying host operating system due to incomplete sanitization of application activation parameters. A successful exploit, achieved by deploying an application with a crafted activation payload, grants full control over the host. While no public exploit code (Metasploit, Nuclei, ExploitDB) is currently available and it's not on the KEV list, the vulnerability has garnered significant community discussion and media coverage, highlighting its potential impact, including the ability for malicious code to persist across reboots.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.4.2CPE matchmatch criteria
cpe:2.3:h:cisco:ic3000_industrial_compute_gateway:*:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:cisco:iox:-:*:*:*:*:*:*:*
< 17.6.5CPE matchmatch criteria
cpe:2.3:o:cisco:ios_xe:*:*:*:*:*:*:*:*
>= 17.9.0, < 17.9.2CPE matchmatch criteria
cpe:2.3:o:cisco:ios_xe:*:*:*:*:*:*:*:*
17.10.0CPE matchmatch criteria
cpe:2.3:o:cisco:ios_xe:17.10.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.2HIGH

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.2
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.51%
Probability of exploitation in next 30 days
EPSS Percentile
71.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0151 is in the 69th percentile among its peer group of 17,829 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

ciscovendor investigatingvia nvd_reference
View patch

References

sec.cloudapps.cisco.com / security/center/content/CiscoSecurityAdvisory/cisco-sa-iox-8whGn5dL
Vendor Advisory