How severe is CVE-2021-3019?

CVE-2021-3019 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2021-3019 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 19% (97th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-3019?

CVE-2021-3019 affects Lanproxy Project Lanproxy. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-3019?

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-2021-3019 published?

CVE-2021-3019 was published on 2021-01-05 and last updated on 2026-06-17.

CVE-2021-3019

CVE-2021-3019 is a high-severity vulnerability in Lanproxy Project Lanproxy with a CVSS 3.x base score of 7.5. Its EPSS exploit-prediction score of 19% places it in the 97th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-22.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 19% (97th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-22
Affected product: Lanproxy Project Lanproxy
Published: 2021-01-05
Last modified: 2026-06-17

Description

ffay lanproxy 0.1 allows Directory Traversal to read /../conf/config.properties to obtain credentials for a connection to the intranet.

Frequently asked questions

What is CVE-2021-3019?: ffay lanproxy 0.1 allows Directory Traversal to read /../conf/config.properties to obtain credentials for a connection to the intranet.
How severe is CVE-2021-3019?: CVE-2021-3019 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2021-3019 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 19% (97th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-3019?: CVE-2021-3019 affects Lanproxy Project Lanproxy. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-3019?: 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-2021-3019 published?: CVE-2021-3019 was published on 2021-01-05 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:lanproxy_project:lanproxy:0.1:*:*:*:*:*:*:*

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