How severe is CVE-2019-25321?

CVE-2019-25321 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-2019-25321 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (47th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-25321?

CVE-2019-25321 affects Internet-soft Ftp Navigator. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-25321?

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.

Does CVE-2019-25321 have an EU (EUVD) identifier?

Yes. CVE-2019-25321 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2019-19572.

When was CVE-2019-25321 published?

CVE-2019-25321 was published on 2026-02-12 and last updated on 2026-06-17.

CVE-2019-25321

CVE-2019-25321 is a critical-severity vulnerability in Internet-soft Ftp Navigator 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-121.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v4: 8.4
EPSS exploit prediction: 1% (47th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2019-19572
Weakness: CWE-121
Affected product: Internet-soft Ftp Navigator
Published: 2026-02-12
Last modified: 2026-06-17

Description

FTP Navigator 8.03 contains a stack overflow vulnerability that allows attackers to execute arbitrary code by overwriting Structured Exception Handler (SEH) registers. Attackers can craft a malicious payload that triggers a buffer overflow when pasted into the Custom Command textbox, enabling remote code execution and launching the calculator as proof of concept.

Frequently asked questions

What is CVE-2019-25321?: FTP Navigator 8.03 contains a stack overflow vulnerability that allows attackers to execute arbitrary code by overwriting Structured Exception Handler (SEH) registers. Attackers can craft a malicious payload that triggers a buffer overflow when pasted into the Custom Command textbox, enabling remote code execution and launching the calculator as proof of concept.
How severe is CVE-2019-25321?: CVE-2019-25321 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-2019-25321 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (47th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-25321?: CVE-2019-25321 affects Internet-soft Ftp Navigator. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-25321?: 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.
Does CVE-2019-25321 have an EU (EUVD) identifier?: Yes. CVE-2019-25321 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2019-19572.
When was CVE-2019-25321 published?: CVE-2019-25321 was published on 2026-02-12 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:internet-soft:ftp_navigator:*:*:*:*:*:*:*:*

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