HOMEVULNERABILITIESCVE-2019-19270
HIGH

CVE-2019-19270

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 through 1.3.6b. Failure to check for the appropriate field of a CRL entry (checking twice for subject, rather than once for subject and once for issuer) prevents some valid CRLs from being taken into account, and can allow clients whose certificates have been revoked to proceed with a connection to the server.

NVD Source

Technical Analysis

CVE-2019-19270 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.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityHigh
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Affected Vendors & Products

Fedora1 product(s)
fedora
proftpd1 product(s)
proftpd
Source: NVD CPE · 4 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://github.com/proftpd/proftpd/issues/859
PATCHhttps://github.com/proftpd/proftpd/issues/859

All References (8)

→
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00009.html
→
https://github.com/proftpd/proftpd/issues/859Patch · Third Party Advisory
→
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OGBBCPLJSDPFG5EI5P5G7P4KEX7YSD5G/
→
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QR65XUHPCRU3NXTSFVF2J4GWRIHC7AHW/
→
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00009.html
→
https://github.com/proftpd/proftpd/issues/859Patch · Third Party Advisory
→
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OGBBCPLJSDPFG5EI5P5G7P4KEX7YSD5G/
→
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QR65XUHPCRU3NXTSFVF2J4GWRIHC7AHW/

Quick Facts

CVE IDCVE-2019-19270
CVSS Score7.5 / 10
SeverityHIGH
WeaknessCWE-295
CISA KEVNo
Affected2 vendor(s)
PublishedNov 26, 2019

Related CVEs (CWE-295)

CVE-2026-4370
10.0
CVE-2017-17301
9.8
CVE-2010-1378
9.8
CVE-2015-7826
9.8
CVE-2015-2320
9.8
CVE-2018-9127
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2019-19270 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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