CVE-2019-25654
published 2026-03-30CVE-2019-25654: Core FTP/SFTP Server 1.2 contains a buffer overflow vulnerability that allows attackers to crash the service by supplying an excessively long string in the…
PriorityP335high7.5CVSS 3.1
AVNACLPRNUINSUCNINAH
EPSS
0.69%
48.2th percentile
Core FTP/SFTP Server 1.2 contains a buffer overflow vulnerability that allows attackers to crash the service by supplying an excessively long string in the User domain field. Attackers can paste a malicious payload containing 7000 bytes of data into the domain configuration to trigger an application crash and deny service.
Affected
2 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| coreftp | core_ftp | — | — |
| coreftp | core_ftp_sftp_server | — | — |
CVSS provenance
nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
nvdv4.08.7HIGHCVSS: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
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Wiz
CVE-2019-25654 Impact, Exploitability, and Mitigation Steps | Wiz
blogs_wiz·CVSS 9.8
CVE-2019-25654 [CRITICAL] CVE-2019-25654 Impact, Exploitability, and Mitigation Steps | Wiz
## CVE-2019-25654 :
CoreFTP Server vulnerability analysis and mitigation
Core FTP/SFTP Server 1.2 contains a buffer overflow vulnerability that allows attackers to crash the service by supplying an excessively long string in the User domain field. Attackers can paste a malicious payload containing 7000 bytes of data into the domain configuration to trigger an application crash and deny service.
Source : NVD
## 8.7
Score
Published March 30, 2026
Severity HIGH
CNA Score 8.7
Affected Technologies
CoreFTP Server
Has Public Exploit Yes
Has CISA KEV Exploit No
CISA KEV Release Date N/A
CISA KEV Due Date N/A
Exploitation Probability Percentile (EPSS) 16
Exploitation Probability (EPSS) 0.1
Affected packages and libraries
cpe:2.3:a:coreftp:core_ftp
Sources
Windows Severity HIG
Wiz
CVE-2019-25686 Impact, Exploitability, and Mitigation Steps | Wiz
blogs_wiz·CVSS 9.8
CVE-2019-25686 [CRITICAL] CVE-2019-25686 Impact, Exploitability, and Mitigation Steps | Wiz
## CVE-2019-25686 :
CoreFTP Server vulnerability analysis and mitigation
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.
Source : NVD
## 8.7
Score
Published April 5, 2026
Severity HIGH
CNA Score 8.7
Affected Technologies
CoreFTP Server
Has Public Exploit Yes
Has CISA KEV Exploit No
CISA KEV Release Date N/A
CISA KEV Due Date N/A
Exploitation Probability Percentile (EPSS) 13.4
Exploitation Probability (EPSS) N/A
Affected packages and libraries
cpe:2.3:a:coreftp:core_ftp
Sources
NVD
Win
2026-03-30
Published