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Vulnerability record · CVE-2019-11934 · published 4 December 2019

CVE-2019-11934: Facebook folly out-of-bounds read vulnerability

Facebook · Folly

Improper handling of close_notify alerts can result in an out-of-bounds read in AsyncSSLSocket. This issue affects folly prior to v2019.11.04.00.

9.8 CVSS 3.1 Critical EPSS 1.7% · top 23.2% CWE-125 · Out-of-bounds read
9.8CVSS 3.1 base score, v2 7.5
1.7%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

Description

Improper handling of close_notify alerts can result in an out-of-bounds read in AsyncSSLSocket. This issue affects folly prior to v2019.11.04.00.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/facebook/folly/commit/c321eb588909646c15aefde035fd3133ba32cdee PatchThird Party Advisory
https://www.facebook.com/security/advisories/cve-2019-11934 Third Party Advisory
https://github.com/facebook/folly/commit/c321eb588909646c15aefde035fd3133ba32cdee PatchThird Party Advisory
https://www.facebook.com/security/advisories/cve-2019-11934 Third Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2019-11934), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.