Critical severity · published Feb 18, 2026
CVE-2019-25364
Win10 MailCarrier 2.51 - 'POP3 User' Remote Buffer Overflow
9.8
CVSS
1%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.0% · higher than 62% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
WM
Win10 MailCarrier · TABS Laboratories Corporation
2.51 · source: vendor
MA
Mailcarrier · Tabslab
2.51 · source: NVD