Is CVE-2019-25364 actively exploited?

No active exploitation of CVE-2019-25364 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2019-25364 be exploited remotely?

Yes. CVE-2019-25364 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2019-25364?

CVE-2019-25364 has a CVSS score of 9.8 (CRITICAL) and an EPSS exploitation probability of 0.25%.

HOME VULNERABILITIESCVE-2019-25364

CRITICAL

CVE-2019-25364

CWE-121Published: February 18, 2026· Updated: Feb 24, 2026

9.8

CVSS v3.1

EPSS:0.18%probability of exploitation in 30 daysPercentile:39.3th

Official 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.

NVD Source

Technical Analysis

CVE-2019-25364 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.