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CVE-2021-22678

25
FAUCET Score

CVE-2021-22678 is a critical vulnerability affecting all versions of Horner Automation Cscape prior to 9.90 SP4, stemming from insufficient validation of user-supplied data in project files. This flaw can lead to memory corruption, enabling an attacker to execute arbitrary code within the context of the current process. With a CVSS score of 7.8 (HIGH), the vulnerability requires user interaction (UI:R) and local access (AV:L), but successful exploitation grants high confidentiality, integrity, and availability impacts. There is currently no evidence of active exploitation, nor are there publicly available exploit modules in Metasploit or ExploitDB, and it has received minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 9.90CPE matchmatch criteria
cpe:2.3:a:hornerautomation:cscape:*:*:*:*:*:*:*:*
9.90CPE matchmatch criteria
cpe:2.3:a:hornerautomation:cscape:9.90:-:*:*:*:*:*:*
9.90CPE matchmatch criteria
cpe:2.3:a:hornerautomation:cscape:9.90:sp1:*:*:*:*:*:*
9.90CPE matchmatch criteria
cpe:2.3:a:hornerautomation:cscape:9.90:sp2:*:*:*:*:*:*
9.90CPE matchmatch criteria
cpe:2.3:a:hornerautomation:cscape:9.90:sp3:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.03%
Probability of exploitation in next 30 days
EPSS Percentile
60.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0103 is in the 57th percentile among its peer group of 11,621 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

us-cert.cisa.gov / ics/advisories/icsa-21-112-01
Third Party AdvisoryUS Government Resource