How severe is CVE-2020-35736?

CVE-2020-35736 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-2020-35736 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 15% (96th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-35736?

CVE-2020-35736 affects Liftoffsoftware Gateone. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-35736?

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-2020-35736 published?

CVE-2020-35736 was published on 2020-12-27 and last updated on 2026-06-17.

CVE-2020-35736

CVE-2020-35736 is a high-severity vulnerability in Liftoffsoftware Gateone with a CVSS 3.x base score of 7.5. Its EPSS exploit-prediction score of 15% places it in the 96th 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: 15% (96th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-22
Affected product: Liftoffsoftware Gateone
Published: 2020-12-27
Last modified: 2026-06-17

Description

GateOne 1.1 allows arbitrary file download without authentication via /downloads/.. directory traversal because os.path.join is misused.

Frequently asked questions

What is CVE-2020-35736?: GateOne 1.1 allows arbitrary file download without authentication via /downloads/.. directory traversal because os.path.join is misused.
How severe is CVE-2020-35736?: CVE-2020-35736 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-2020-35736 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 15% (96th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-35736?: CVE-2020-35736 affects Liftoffsoftware Gateone. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-35736?: 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-2020-35736 published?: CVE-2020-35736 was published on 2020-12-27 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:liftoffsoftware:gateone:1.1:*:*:*:*:*:*:*

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