How severe is CVE-2022-3377?

CVE-2022-3377 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-2022-3377 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (15th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-3377?

CVE-2022-3377 primarily affects Hornerautomation Cscape. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2022-3377?

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-2022-3377 published?

CVE-2022-3377 was published on 2022-11-15 and last updated on 2026-06-17.

CVE-2022-3377

CVE-2022-3377 is a high-severity vulnerability in Hornerautomation Cscape 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-824.

Key facts

Severity: High (CVSS 3.x base score 7.8)
EPSS exploit prediction: 0% (15th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-824
Affected product: Hornerautomation Cscape
Published: 2022-11-15
Last modified: 2026-06-17

Description

Horner Automation's Cscape version 9.90 SP 6 and prior does not properly validate user-supplied data. If a user opens a maliciously formed FNT file, then an attacker could execute arbitrary code within the current process by accessing an uninitialized pointer, leading to an out-of-bounds memory read.

Frequently asked questions

What is CVE-2022-3377?: Horner Automation's Cscape version 9.90 SP 6 and prior does not properly validate user-supplied data. If a user opens a maliciously formed FNT file, then an attacker could execute arbitrary code within the current process by accessing an uninitialized pointer, leading to an out-of-bounds memory read.
How severe is CVE-2022-3377?: CVE-2022-3377 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-2022-3377 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (15th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-3377?: CVE-2022-3377 primarily affects Hornerautomation Cscape. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2022-3377?: 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-2022-3377 published?: CVE-2022-3377 was published on 2022-11-15 and last updated on 2026-06-17.

References

https://www.cisa.gov/uscert/ics/advisories/icsa-22-277-03

Affected products (8)

cpe:2.3:a:hornerautomation:cscape:*:*:*:*:*:*:*:*
cpe:2.3:a:hornerautomation:cscape:9.90:-:*:*:*:*:*:*
cpe:2.3:a:hornerautomation:cscape:9.90:sp1:*:*:*:*:*:*
cpe:2.3:a:hornerautomation:cscape:9.90:sp2:*:*:*:*:*:*
cpe:2.3:a:hornerautomation:cscape:9.90:sp3:*:*:*:*:*:*
cpe:2.3:a:hornerautomation:cscape:9.90:sp4:*:*:*:*:*:*
cpe:2.3:a:hornerautomation:cscape:9.90:sp5:*:*:*:*:*:*
cpe:2.3:a:hornerautomation:cscape:9.90:sp6:*:*:*:*:*:*

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