Vulnerability-Lookup

CVE-2019-25686 (GCVE-0-2019-25686)

Vulnerability from cvelistv5 – Published: 2026-04-05 20:45 – Updated: 2026-04-06 15:43

Title

Core FTP 2.0 build 653 PBSZ Unauthenticated Denial of Service

Summary

Core FTP 2.0 build 653 contains a denial of service vulnerability in the PBSZ command that allows unauthenticated attackers to crash the service by sending a malformed command with an oversized buffer. Attackers can send a PBSZ command with a payload exceeding 211 bytes to trigger an access violation and crash the FTP server process.

Severity

8.7 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

7.5 (High)


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

SSVC

Exploitation: poc Automatable: yes Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-306 - Missing Authentication for Critical Function

Assigner

VulnCheck

References

4 references

URL	Tags
https://www.exploit-db.com/exploits/46532	exploit
http://www.coreftp.com/	product
http://coreftp.com/server/download/archive/CoreFT…	product
https://www.vulncheck.com/advisories/core-ftp-bui…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
Coreftp	Core FTP	Affected: 2.0

Date Public

2019-03-12 00:00

Credits

Hodorsec (hodorsec@protonmail.com / hodor@hodorsec.com)

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2019-25686

Vulnerability from fkie_nvd - Published: 2026-04-05 21:16 - Updated: 2026-06-17 02:32

Severity

7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Summary

References

URL	Tags
disclosure@vulncheck.com	http://coreftp.com/server/download/archive/CoreFTPServer653.exe	Product
disclosure@vulncheck.com	http://www.coreftp.com/	Product
disclosure@vulncheck.com	https://www.exploit-db.com/exploits/46532	Exploit, VDB Entry
disclosure@vulncheck.com	https://www.vulncheck.com/advisories/core-ftp-build-653-pbsz-unauthenticated-denial-of-service	Third Party Advisory

Impacted products

	Vendor	Product	Version
	coreftp	core_ftp	2.0

JSON

To clipboard

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  "lastModified": "2026-06-17T02:32:57.823",
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      ],
      "source": "disclosure@vulncheck.com",
      "type": "Secondary"
    }
  ]
}

GHSA-FRGR-R4XW-R3PH

Vulnerability from github – Published: 2026-04-05 21:30 – Updated: 2026-04-05 21:30

Details

Severity

7.5 (High)


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

8.7 (High)


                  
                    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

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{
  "affected": [],
  "aliases": [
    "CVE-2019-25686"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-306"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-04-05T21:16:47Z",
    "severity": "HIGH"
  },
  "details": "Core FTP 2.0 build 653 contains a denial of service vulnerability in the PBSZ command that allows unauthenticated attackers to crash the service by sending a malformed command with an oversized buffer. Attackers can send a PBSZ command with a payload exceeding 211 bytes to trigger an access violation and crash the FTP server process.",
  "id": "GHSA-frgr-r4xw-r3ph",
  "modified": "2026-04-05T21:30:21Z",
  "published": "2026-04-05T21:30:21Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2019-25686"
    },
    {
      "type": "WEB",
      "url": "https://www.exploit-db.com/exploits/46532"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/core-ftp-build-653-pbsz-unauthenticated-denial-of-service"
    },
    {
      "type": "WEB",
      "url": "http://coreftp.com/server/download/archive/CoreFTPServer653.exe"
    },
    {
      "type": "WEB",
      "url": "http://www.coreftp.com"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.

Action not permitted

CVE-2019-25686 (GCVE-0-2019-25686)

FKIE_CVE-2019-25686

GHSA-FRGR-R4XW-R3PH

Tags

Sightings

Nomenclature