How severe is CVE-2023-53886?

CVE-2023-53886 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 none, integrity none, and availability high.

Is CVE-2023-53886 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (29th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-53886?

CVE-2023-53886 affects Xlightftpd Xlight Ftp Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-53886?

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.

Does CVE-2023-53886 have an EU (EUVD) identifier?

Yes. CVE-2023-53886 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-203414.

When was CVE-2023-53886 published?

CVE-2023-53886 was published on 2025-12-15 and last updated on 2026-06-17.

CVE-2023-53886

CVE-2023-53886 is a high-severity vulnerability in Xlightftpd Xlight Ftp Server with a CVSS 3.x base score of 7.5. 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-787.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v4: 5.1
EPSS exploit prediction: 0% (29th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-203414
Weakness: CWE-787
Affected product: Xlightftpd Xlight Ftp Server
Published: 2025-12-15
Last modified: 2026-06-17

Description

Xlight FTP Server 3.9.3.6 contains a stack buffer overflow vulnerability in the 'Execute Program' configuration that allows attackers to crash the application. Attackers can trigger the vulnerability by inserting 294 characters into the program execution configuration, causing a denial of service condition.

Frequently asked questions

What is CVE-2023-53886?: Xlight FTP Server 3.9.3.6 contains a stack buffer overflow vulnerability in the 'Execute Program' configuration that allows attackers to crash the application. Attackers can trigger the vulnerability by inserting 294 characters into the program execution configuration, causing a denial of service condition.
How severe is CVE-2023-53886?: CVE-2023-53886 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 none, integrity none, and availability high.
Is CVE-2023-53886 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (29th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-53886?: CVE-2023-53886 affects Xlightftpd Xlight Ftp Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-53886?: 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.
Does CVE-2023-53886 have an EU (EUVD) identifier?: Yes. CVE-2023-53886 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-203414.
When was CVE-2023-53886 published?: CVE-2023-53886 was published on 2025-12-15 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:xlightftpd:xlight_ftp_server:3.9.3.6:*:*:*:*:*:*:*

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