Critical security advisoryCriticalFlagged by our vulnerability database: PHP2Shell is on CISA’s exploited list. Most WordPress hosting runs PHP. See if your site is affectedFlagged by our vulnerability database: PHP2Shell is being exploited. DetailsExploited: PHP2Shell. Check your site
HuttenlocherTechnologies
Updated 6 h ago

Vulnerability database

Every flaw the U.S. government’s cybersecurity agency (CISA) has confirmed attackers are using, plus the new WordPress plugin and theme bugs published each day, sorted by what they mean for a small business. We refresh it twice a day. If you see something your website or office runs, tell us.

1,764exploited flaws on CISA’s list
35added in the last 30 days
456new WordPress flaws this week
390,714entries in the database

8 results

  • Mar 30, 2026FTPShell Server 6.83 contains a buffer overflow vulnerability that allows local attackers to crash the application by supplying an excessively long string in thCVE-2018-25226 · Other software · Ftpshell · reported by VulnCheckMedium 6.9

    FTPShell Server 6.83 contains a buffer overflow vulnerability that allows local attackers to crash the application by supplying an excessively long string in the account name field. Attackers can trigger a denial of service by pasting a 417-byte payload into the 'Account name to ban' parameter within the Manage FTP Accounts interface.

    Product
    FTPShell Server
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Mar 22, 2026FTP Shell Server 6.83 contains a buffer overflow vulnerability in the 'Account name to ban' field that allows local attackers to execute arbitrary code by supplCVE-2019-25619 · Other software · Ftpshell · reported by VulnCheckHigh 8.6

    FTP Shell Server 6.83 contains a buffer overflow vulnerability in the 'Account name to ban' field that allows local attackers to execute arbitrary code by supplying a crafted string. Attackers can inject shellcode through the account name parameter in the Manage FTP Accounts dialog to overwrite the return address and execute calc.exe or other commands.

    Product
    FTP Shell Server
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Dec 17, 2021A buffer overflow vulnerability in the Virtual Path Mapping component of FTPShell v6.83 allows attackers to cause a denial of service (DoS).CVE-2020-18077 · Other software · Ftpshell · reported by MITREHigh 7.5

    A buffer overflow vulnerability in the Virtual Path Mapping component of FTPShell v6.83 allows attackers to cause a denial of service (DoS).

    Product
    Ftpshell Server
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Mar 1, 2018An issue was discovered in FTPShell Client 6.7.CVE-2018-7573 · Other software · Ftpshell · reported by MITRECritical 9.8

    An issue was discovered in FTPShell Client 6.7. A remote FTP server can send 400 characters of 'F' in conjunction with the FTP 220 response code to crash the application; after this overflow, one can run arbitrary code on the victim machine. This is similar to CVE-2009-3364 and CVE-2017-6465.

    Product
    Ftpshell Client
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Mar 9, 2017Remote Code Execution was discovered in FTPShell Client 6.53.CVE-2017-6465 · Other software · Ftpshell · reported by MITRECritical 9.8

    Remote Code Execution was discovered in FTPShell Client 6.53. By default, the client sends a PWD command to the FTP server it is connecting to; however, it doesn't check the response's length, leading to a buffer overflow situation.

    Product
    Ftpshell Client
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Sep 24, 2009Stack-based buffer overflow in FTPShell Client 4.1 RC2 allows remote FTP servers to execute arbitrary code via a long response to a PASV command.CVE-2009-3364 · Other software · Ftpshell · reported by MITREHigh 9.3

    Stack-based buffer overflow in FTPShell Client 4.1 RC2 allows remote FTP servers to execute arbitrary code via a long response to a PASV command.

    Product
    Ftpshell
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Jan 29, 2009Stack-based buffer overflow in FTPShell Server 4.3 allows user-assisted remote attackers to cause a denial of service (persistent daemon crash) and possibly exeCVE-2009-0349 · Other software · Ftpshell · reported by MITREHigh 9.3

    Stack-based buffer overflow in FTPShell Server 4.3 allows user-assisted remote attackers to cause a denial of service (persistent daemon crash) and possibly execute arbitrary code via a long string in a licensing key (aka .key) file.

    Product
    Ftpshell Server
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Aug 3, 2005FTPshell Server 3.38 allows remote authenticated users to cause a denial of service (application crash) by multiple connections and disconnections without usingCVE-2005-2426 · Other software · Ftpshell · reported by MITRELow 2.1

    FTPshell Server 3.38 allows remote authenticated users to cause a denial of service (application crash) by multiple connections and disconnections without using the QUIT command.

    Product
    Ftpshell Server
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.

Where this comes from: the exploited list is CISA’s Known Exploited Vulnerabilities catalog. Everything else is the whole National Vulnerability Database, where each record is published by the team that found the bug (Wordfence, Patchstack, WPScan, the vendors themselves and others); we show who. Exploit odds are FIRST’s EPSS, updated daily. Titles and categories are ours, so check the linked record before acting on a detail. For a write-up of the big ones, see our advisories. Every vendor, and every WordPress plugin and theme with a recorded flaw, also has its own page. All of it is free to reuse as JSON, CSV or RSS.

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