How severe is CVE-2019-12144?

CVE-2019-12144 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2019-12144 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (85th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-12144?

CVE-2019-12144 affects Ipswitch Ws Ftp Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-12144?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2019-12144 published?

CVE-2019-12144 was published on 2019-06-11 and last updated on 2026-06-17.

CVE-2019-12144

CVE-2019-12144 is a critical-severity vulnerability in Ipswitch Ws Ftp Server with a CVSS 3.x base score of 9.8. 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-22.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 3% (85th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-22
Affected product: Ipswitch Ws Ftp Server
Published: 2019-06-11
Last modified: 2026-06-17

Description

An issue was discovered in SSHServerAPI.dll in Progress ipswitch WS_FTP Server 2018 before 8.6.1. Attackers have the ability to abuse a path traversal vulnerability using the SCP protocol. Attackers who leverage this flaw could also obtain remote code execution by crafting a payload that abuses the SITE command feature.

Frequently asked questions

What is CVE-2019-12144?: An issue was discovered in SSHServerAPI.dll in Progress ipswitch WS_FTP Server 2018 before 8.6.1. Attackers have the ability to abuse a path traversal vulnerability using the SCP protocol. Attackers who leverage this flaw could also obtain remote code execution by crafting a payload that abuses the SITE command feature.
How severe is CVE-2019-12144?: CVE-2019-12144 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2019-12144 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (85th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-12144?: CVE-2019-12144 affects Ipswitch Ws Ftp Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-12144?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2019-12144 published?: CVE-2019-12144 was published on 2019-06-11 and last updated on 2026-06-17.

References

https://docs.ipswitch.com/WS_FTP_Server2018/ReleaseNotes/index.htm#49242.htm

Affected products (1)

cpe:2.3:a:ipswitch:ws_ftp_server:*:*:*:*:*:*:*:*

More vulnerabilities in Ipswitch Ws Ftp Server

CVE-2019-12146 — Critical (CVSS 9.1): A Directory Traversal issue was discovered in SSHServerAPI.dll in Progress ipswitch WS_FTP Server 2018 before 8.6.1.…
CVE-2019-12145 — High (CVSS 7.5): A Directory Traversal issue was discovered in SSHServerAPI.dll in Progress ipswitch WS_FTP Server 2018 before 8.6.1. An…
CVE-2006-4974 — High (CVSS 7.5): Buffer overflow in Ipswitch WS_FTP Limited Edition (LE) 5.08 allows remote FTP servers to execute arbitrary code via a…
CVE-2004-1884 — High (CVSS 7.5): Ipswitch WS_FTP Server 4.0.2 has a backdoor XXSESS_MGRYY username with a default password, which allows remote…
CVE-2003-0772 — High (CVSS 7.5): Multiple buffer overflows in WS_FTP 3 and 4 allow remote authenticated users to cause a denial of service and possibly…
CVE-2007-0666 — Medium (CVSS 6.8): Ipswitch WS_FTP Server 5.04 allows FTP site administrators to execute arbitrary code on the system via a long input…

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