CVE-2025-53899

Q: How do I fix CVE-2025-53899?

Upgrade kiteworks managed file transfer to 9.1.0 or later.

Q: Is CVE-2025-53899 being actively exploited?

Not that we know of. CVE-2025-53899 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.92% is the estimated probability that it will be exploited in the next 30 days. That is higher than 57% of all scored CVEs.

Q: How severe is CVE-2025-53899?

CVE-2025-53899 has a CVSS v3 base score of 7.2, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

Q: What does CVE-2025-53899 affect?

Published advisories record a fix for kiteworks managed file transfer (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

HIGH

7.2

CVSS v3

NVD

Description

Kiteworks MFT orchestrates end-to-end file transfer workflows. Prior to version 9.1.0, the back-end of Kiteworks MFT is vulnerable to an incorrectly specified destination in a communication channel which allows an attacker with administrative privileges on the system under certain circumstances to intercept upstream communication which could lead to an escalation of privileges. This issue has been patched in version 9.1.0.

CWE-941

How to fix

Remediation Available

kiteworks managed file transferNVD

Affected:< 9.1.0Fixed in:9.1.0CVE-2025-53899derived from NVD

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredHigh

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

0.92%probability of exploitation in 30 days

57thpercentile

Moderate risk: more likely to be exploited than 57% of all known CVEs.

References

Patch1

github.com

Related Vulnerabilities

Other CWE-941 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2024-29415	High	8.1	8.3%	-	Fix
CVE-2019-18242	High	7.5	1.6%	-	-
CVE-2022-4847	Medium	6.5	0.6%	-	Fix
CVE-2023-33198	Medium	6.1	0.6%	-	Fix
CVE-2025-69515	Critical	9.1	0.5%	-	-
CVE-2024-34947	Critical	9.4	0.4%	-	-

Common questions

How do I fix CVE-2025-53899?

Upgrade kiteworks managed file transfer to 9.1.0 or later.

Is CVE-2025-53899 being actively exploited?

Not that we know of. CVE-2025-53899 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.92% is the estimated probability that it will be exploited in the next 30 days. That is higher than 57% of all scored CVEs.

How severe is CVE-2025-53899?

CVE-2025-53899 has a CVSS v3 base score of 7.2, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2025-53899 affect?

Published advisories record a fix for kiteworks managed file transfer (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-12-03.