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    CVE-2019-25686

    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.

    Published:Apr 5, 2026
    Last Modified:Apr 9, 2026
    EPS:Apr 5, 2026
    EPSS Score:0.00043
    CVSS Score:7.5

    Affected Products

    Vendor
    Coreftp
    Product
    Core Ftp

    Exploits

    https://www.exploit-db.com/exploits/46532

    Related CVEs

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    CVE-2022-22836 (CVSS 6.5) — CoreFTP Server before 727 allows directory traversal (for file creation) by an authenticated attacker via ../ …
    CVE-2020-19595 (CVSS 7.5) — Buffer overflow vulnerability in Core FTP Server v2 Build 697, via a crafted username.…
    CVE-2020-19596 (CVSS 9.8) — Buffer overflow vulnerability in Core FTP Server v1.2 Build 583, via a crafted username.…
    CVE-2020-21588 (CVSS 5.5) — Buffer overflow in Core FTP LE v2.2 allows local attackers to cause a denial or service (crash) via a long str…
    CVE-2019-9649 (CVSS 5.3) — An issue was discovered in the SFTP Server component in Core FTP 2.0 Build 674. Using the MDTM FTP command, a …
    CVE-2019-9648 (CVSS 5.3) — An issue was discovered in the SFTP Server component in Core FTP 2.0 Build 674. A directory traversal vulnerab…
    CVE-2018-20658 (CVSS 7.5) — The server in Core FTP 2.0 build 653 on 32-bit platforms allows remote attackers to cause a denial of service …
    CVE-2018-12113 (CVSS 9.8) — Core FTP LE version 2.2 Build 1921 is prone to a buffer overflow vulnerability that may result in a DoS or rem…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High