CVE-2019-25364
CRITICAL
2026-02-18
[email protected]
9.8
CVSS 3.1
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CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Lifecycle Timeline
3
Analysis Generated
Mar 12, 2026 - 21:55 vuln.today
PoC Detected
Feb 24, 2026 - 20:41 vuln.today
Public exploit code
CVE Published
Feb 18, 2026 - 22:16 nvd
CRITICAL 9.8
Description
MailCarrier 2.51 contains a buffer overflow vulnerability in the POP3 USER command that allows remote attackers to execute arbitrary code. Attackers can send a crafted oversized buffer to the POP3 service, overwriting memory and potentially gaining remote system access.
Analysis
Buffer overflow in MailCarrier 2.51 POP3 server via USER command allows remote attackers to execute arbitrary code. Network-exploitable without authentication. PoC available.
Technical Context
CWE-121 stack overflow in POP3 service. The USER command handler doesn't validate input length, enabling remote code execution.
Affected Products
['MailCarrier 2.51']
Remediation
Update MailCarrier or migrate to a modern mail server.
Priority Score
69
Low
Medium
High
Critical
KEV: 0
EPSS: +0.3
CVSS: +49
POC: +20
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External POC / Exploit Code
Leaving vuln.today
Destination URL
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