Is CVE-2019-19271 actively exploited?

No active exploitation of CVE-2019-19271 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2019-19271 be exploited remotely?

Yes. CVE-2019-19271 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2019-19271?

CVE-2019-19271 has a CVSS score of 7.5 (HIGH).

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HIGH

CVE-2019-19271

CWE-295Published: November 26, 2019· Updated: Jun 17, 2026

7.5

CVSS v3.1

Official Description

An issue was discovered in tls_verify_crl in ProFTPD before 1.3.6. A wrong iteration variable, used when checking a client certificate against CRL entries (installed by a system administrator), can cause some CRL entries to be ignored, and can allow clients whose certificates have been revoked to proceed with a connection to the server.

NVD Source

Technical Analysis

CVE-2019-19271 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 full integrity compromise (data manipulation), with a CVSS base score of 7.5.