How severe is CVE-2021-44462?

CVE-2021-44462 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-44462 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-44462?

CVE-2021-44462 affects Hornerautomation Cscape Envisionrv. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-44462?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2021-44462 published?

CVE-2021-44462 was published on 2022-03-25 and last updated on 2026-06-17.

CVE-2021-44462

CVE-2021-44462 is a high-severity vulnerability in Hornerautomation Cscape Envisionrv with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 5.8
EPSS exploit prediction: 1% (48th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Hornerautomation Cscape Envisionrv
Published: 2022-03-25
Last modified: 2026-06-17

Description

This vulnerability can be exploited by parsing maliciously crafted project files with Horner Automation Cscape EnvisionRV v4.50.3.1 and prior. The issues result from the lack of proper validation of user-supplied data, which can result in reads and writes past the end of allocated data structures. User interaction is required to exploit this vulnerability as an attacker must trick a valid user to open a malicious HMI project file.

Frequently asked questions

What is CVE-2021-44462?: This vulnerability can be exploited by parsing maliciously crafted project files with Horner Automation Cscape EnvisionRV v4.50.3.1 and prior. The issues result from the lack of proper validation of user-supplied data, which can result in reads and writes past the end of allocated data structures. User interaction is required to exploit this vulnerability as an attacker must trick a valid user to open a malicious HMI project file.
How severe is CVE-2021-44462?: CVE-2021-44462 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-44462 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-44462?: CVE-2021-44462 affects Hornerautomation Cscape Envisionrv. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-44462?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-44462 published?: CVE-2021-44462 was published on 2022-03-25 and last updated on 2026-06-17.

References

https://www.cisa.gov/uscert/ics/advisories/icsa-21-355-02

Affected products (1)

cpe:2.3:a:hornerautomation:cscape_envisionrv:*:*:*:*:*:*:*:*

More vulnerabilities in Hornerautomation Cscape Envisionrv

CVE-2023-32203 — High (CVSS 7.8): Horner Automation Cscape lacks proper validation of user-supplied data when parsing project files (e.g., HMI). This…
CVE-2023-31278 — High (CVSS 7.8): Horner Automation Cscape lacks proper validation of user-supplied data when parsing project files (e.g., HMI). This…
CVE-2023-31244 — High (CVSS 7.8): The affected product does not properly validate user-supplied data. If a user opens a maliciously formed CSP file, then…
CVE-2023-29503 — High (CVSS 7.8): The affected application lacks proper validation of user-supplied data when parsing project files (e.g., CSP). This…
CVE-2023-28653 — High (CVSS 7.8): The affected application lacks proper validation of user-supplied data when parsing project files (e.g., CSP). This…
CVE-2023-27916 — High (CVSS 7.8): The affected application lacks proper validation of user-supplied data when parsing font files (e.g., FNT). This could…

All CVEs affecting Hornerautomation Cscape Envisionrv →

Other CWE-20 (Improper Input Validation) vulnerabilities

CVE-2026-48316 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
CVE-2026-48281 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
CVE-2026-48277 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
CVE-2026-48055 — Critical (CVSS 10.0): Streambert is a cross-platform Electron Desktop App to stream and download any video media. In versions 2.4.0 and…
CVE-2026-34910 — Critical (CVSS 10.0): A malicious actor with access to the network could exploit an Improper Input Validation vulnerability found in UniFi OS…
CVE-2026-33587 — Critical (CVSS 10.0): Lack of user input sanitisation in Open Notebook v1.8.3 allows the application user to execute Python code (and…

Browse all CWE-20 (Improper Input Validation) vulnerabilities →