High severity7.5NVD Advisory· Published Apr 5, 2026· Updated Apr 9, 2026
CVE-2019-25686
CVE-2019-25686
Description
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.
Affected products
1Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
4- www.exploit-db.com/exploits/46532nvdExploitVDB Entry
- www.vulncheck.com/advisories/core-ftp-build-653-pbsz-unauthenticated-denial-of-servicenvdThird Party Advisory
- coreftp.com/server/download/archive/CoreFTPServer653.exenvdProduct
- www.coreftp.comnvdProduct
News mentions
1- Attackers adopt JavaScript runtime Bun to spread NWHStealerMalwarebytes Labs · May 6, 2026