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CVE-2018-25254 nico-ftp CVE debrief

CVE-2018-25254 is a structured exception handler buffer overflow vulnerability in NICO-FTP 3.0.1.19. Remote attackers can execute arbitrary code by sending crafted FTP commands, specifically oversized data in response handlers, to overwrite SEH pointers and redirect execution to injected shellcode. This vulnerability has a CVSS score of 9.3 and is classified as CRITICAL. Users of NICO-FTP 3.0.1.19 should apply patches or mitigations to prevent remote code execution attacks. The vulnerability exists in the structured exception handler of NICO-FTP 3.0.1.19, and attackers can cause a buffer overflow by sending crafted FTP commands.

Vendor
nico-ftp
Product
Unknown
CVSS
CRITICAL 9.3
CISA KEV
Not listed in stored evidence
Original CVE published
2026-04-04
Original CVE updated
2026-07-24
Advisory published
2026-04-04
Advisory updated
2026-07-24

Who should care

Users of NICO-FTP 3.0.1.19, system administrators, and security teams should prioritize patching and monitor for potential exploitation attempts. Affected operators should review official advisories and assess potential exposure. Security teams should implement compensating controls and monitor for suspicious activity.

Technical summary

The vulnerability exists in the structured exception handler of NICO-FTP 3.0.1.19. By sending crafted FTP commands, an attacker can cause a buffer overflow, overwriting SEH pointers. This allows the attacker to redirect execution to injected shellcode, enabling arbitrary code execution. The vulnerability has a CVSS score of 9.3 and is classified as CRITICAL. To address this vulnerability, apply patches or updates provided by the vendor, implement network access controls to restrict FTP service access, and monitor FTP service logs for suspicious activity.

Defensive priority

High

Recommended defensive actions

  • Apply patches or updates provided by the vendor to address the buffer overflow vulnerability.
  • Implement network access controls to restrict FTP service access.
  • Monitor FTP service logs for suspicious activity.
  • Consider using compensating controls, such as Web Application Firewalls (WAFs), to detect and prevent exploitation attempts.
  • Review and update asset inventory to ensure all affected systems are accounted for.
  • Perform regular security audits to identify potential vulnerabilities.
  • Establish a process for tracking and addressing exceptions.

Evidence notes

The CVE record and NVD detail provide information on the vulnerability. Additional sources, such as exploit-db and vendor advisories, offer further context. However, due to limited source detail, defenders should verify the affected scope and severity through official channels. The structured exception handler buffer overflow vulnerability in NICO-FTP 3.0.1.19 allows remote attackers to execute arbitrary code by sending crafted FTP commands. To confirm affected product deployments, review official advisories and assess potential exposure. Verify patch application and monitor for suspicious activity.

Sources and references

Verified primary and authoritative sources

  • CVE-2018-25254 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2018-25254

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2018-25254 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2018-25254

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.