How severe is CVE-2020-11707?

CVE-2020-11707 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-11707 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-11707?

CVE-2020-11707 affects Provideserver Provide Ftp Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-11707?

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-2020-11707 published?

CVE-2020-11707 was published on 2020-04-12 and last updated on 2026-06-17.

CVE-2020-11707

CVE-2020-11707 is a high-severity vulnerability in Provideserver Provide Ftp Server with a CVSS 3.x base score of 8.8. 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-863.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 6.5
EPSS exploit prediction: 1% (59th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-863
Affected product: Provideserver Provide Ftp Server
Published: 2020-04-12
Last modified: 2026-06-17

Description

An issue was discovered in ProVide (formerly zFTPServer) through 13.1. It doesn't enforce permission over Windows Symlinks or Junctions. As a result, a low-privileged user (non-admin) can craft a Junction Link in a directory he has full control of, breaking out of the sandbox.

Frequently asked questions

What is CVE-2020-11707?: An issue was discovered in ProVide (formerly zFTPServer) through 13.1. It doesn't enforce permission over Windows Symlinks or Junctions. As a result, a low-privileged user (non-admin) can craft a Junction Link in a directory he has full control of, breaking out of the sandbox.
How severe is CVE-2020-11707?: CVE-2020-11707 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-11707 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-11707?: CVE-2020-11707 affects Provideserver Provide Ftp Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-11707?: 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-2020-11707 published?: CVE-2020-11707 was published on 2020-04-12 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:provideserver:provide_ftp_server:*:*:*:*:*:windows:*:*

More vulnerabilities in Provideserver Provide Ftp Server

CVE-2020-11708 — Critical (CVSS 9.8): An issue was discovered in ProVide (formerly zFTPServer) through 13.1. Privilege escalation can occur via the…
CVE-2020-11705 — Critical (CVSS 9.8): An issue was discovered in ProVide (formerly zFTPServer) through 13.1. /ajax/ImportCertificate allows an attacker to…
CVE-2020-11706 — High (CVSS 8.8): An issue was discovered in ProVide (formerly zFTPServer) through 13.1. The Admin Interface allows CSRF for actions such…
CVE-2020-11701 — High (CVSS 8.8): An issue was discovered in ProVide (formerly zFTPServer) through 13.1. CSRF exists in the User Web Interface, as…
CVE-2020-11703 — High (CVSS 7.5): An issue was discovered in ProVide (formerly zFTPServer) through 13.1. /ajax/GetInheritedProperties allows HTTP…
CVE-2020-11704 — Medium (CVSS 6.1): An issue was discovered in ProVide (formerly zFTPServer) through 13.1. The Admin Web Interface has Multiple Stored and…

All CVEs affecting Provideserver Provide Ftp Server →

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