CVE-2023-53886

Xlight FTP Server 3.9.3.6 Stack Buffer Overflow Vulnerability via Execute Program

HIGH
7.5
CVSS Score
Published: December 15, 2025 at 08:28 PM UTC
Updated: June 17, 2026 at 06:46 AM UTC
1 product affected across 1 vendorXlight FTP Server

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Severity
HIGH7.5
Exploit prediction
EPSS 0.4%
SSVC
PoC

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (3)

ExploitThird Party Advisory
Source: cverecord
https://www.exploit-db.com/exploits/51665
ProductVendor Advisory
Source: cverecord
https://www.xlightftpd.com/

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-121CWE-787

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