How severe is CVE-2021-43455?

CVE-2021-43455 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-43455 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-43455?

CVE-2021-43455 affects Freelan. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-43455?

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-2021-43455 published?

CVE-2021-43455 was published on 2022-04-04 and last updated on 2026-06-17.

CVE-2021-43455

CVE-2021-43455 is a high-severity vulnerability in Freelan 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-428.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 7.2
EPSS exploit prediction: 0% (36th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-428
Affected product: Freelan
Published: 2022-04-04
Last modified: 2026-06-17

Description

An Unquoted Service Path vulnerability exists in FreeLAN 2.2 via a specially crafted file in the FreeLAN Service path.

Frequently asked questions

What is CVE-2021-43455?: An Unquoted Service Path vulnerability exists in FreeLAN 2.2 via a specially crafted file in the FreeLAN Service path.
How severe is CVE-2021-43455?: CVE-2021-43455 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-43455 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-43455?: CVE-2021-43455 affects Freelan. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-43455?: 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-2021-43455 published?: CVE-2021-43455 was published on 2022-04-04 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:freelan:freelan:2.2:*:*:*:*:*:*:*

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