CVE-2019-3565

Name: CVE-2019-3565
Creator: NVD / NIST
Published: 2019-05-06T16:29:01.317+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 2.81%

Last modified Jun 17, 2026

CVE-2019-3565 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Legacy C++ Facebook Thrift servers (using cpp instead of cpp2) would not error upon receiving messages with containers of fields of unknown type. As a result, malicious clients could send short messages which would take a long time for the server to parse, potentially leading to denial of service. EPSS estimates a 2.81% chance of exploitation in the next 30 days.

Description

Legacy C++ Facebook Thrift servers (using cpp instead of cpp2) would not error upon receiving messages with containers of fields of unknown type. As a result, malicious clients could send short messages which would take a long time for the server to parse, potentially leading to denial of service. This issue affects Facebook Thrift prior to v2019.05.06.00.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

2.81%

84.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Facebook	Thrift	< 2019.05.06.00

References

http://www.securityfocus.com/bid/108280Third Party Advisory, VDB Entry
https://github.com/facebook/fbthrift/commit/01686e15ec77ccb4d49a77d5bce3a01601e54d64Patch, Third Party Advisory
https://lists.apache.org/thread.html/rd0e44e8ef71eeaaa3cf3d1b8b41eb25894372e2995ec908ce7624d26%40%3Ccommits.pulsar.apache.org%3E
https://www.facebook.com/security/advisories/cve-2019-3565Vendor Advisory
http://www.securityfocus.com/bid/108280Third Party Advisory, VDB Entry
https://github.com/facebook/fbthrift/commit/01686e15ec77ccb4d49a77d5bce3a01601e54d64Patch, Third Party Advisory
https://lists.apache.org/thread.html/rd0e44e8ef71eeaaa3cf3d1b8b41eb25894372e2995ec908ce7624d26%40%3Ccommits.pulsar.apache.org%3E
https://www.facebook.com/security/advisories/cve-2019-3565Vendor Advisory

Timeline

Published: May 6, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-3565?

How severe is CVE-2019-3565?

CVE-2019-3565 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 2.81% probability of exploitation in the next 30 days.

How do I fix CVE-2019-3565?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-3565?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST