How severe is CVE-2022-3859?

CVE-2022-3859 has a CVSS 3.x base score of 6.7, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2022-3859 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (10th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-3859?

CVE-2022-3859 affects Trellix Agent. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2022-3859?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2022-3859 published?

CVE-2022-3859 was published on 2022-11-30 and last updated on 2026-06-17.

CVE-2022-3859

CVE-2022-3859 is a medium-severity vulnerability in Trellix Agent with a CVSS 3.x base score of 6.7. 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-427.

Key facts

Severity: Medium (CVSS 3.x base score 6.7)
EPSS exploit prediction: 0% (10th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-427
Affected product: Trellix Agent
Published: 2022-11-30
Last modified: 2026-06-17

Description

An uncontrolled search path vulnerability exists in Trellix Agent (TA) for Windows in versions prior to 5.7.8. This allows an attacker with admin access, which is required to place the DLL in the restricted Windows System folder, to elevate their privileges to System by placing a malicious DLL there.

Frequently asked questions

What is CVE-2022-3859?: An uncontrolled search path vulnerability exists in Trellix Agent (TA) for Windows in versions prior to 5.7.8. This allows an attacker with admin access, which is required to place the DLL in the restricted Windows System folder, to elevate their privileges to System by placing a malicious DLL there.
How severe is CVE-2022-3859?: CVE-2022-3859 has a CVSS 3.x base score of 6.7, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2022-3859 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (10th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-3859?: CVE-2022-3859 affects Trellix Agent. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2022-3859?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2022-3859 published?: CVE-2022-3859 was published on 2022-11-30 and last updated on 2026-06-17.

References

https://kcm.trellix.com/corporate/index?page=content&id=SB10391

Affected products (1)

cpe:2.3:a:trellix:agent:*:*:*:*:windows:*:*:*

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