CVE-2019-11934: Facebook Folly

Critical severity, CVSS 9.8. EPSS: 1.7% chance of exploitation in the next 30 days.

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.

Affected products

• Facebook Folly: before 2019.11.04.00 (fixed in 2019.11.04.00)

Published 2019-12-04. Last modified 2026-06-17.