What’s Vulnerable › Vulnerabilities

CVE-2019-11934

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2019-12-04 · updated 2026-06-17
• Weakness: CWE-125

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.

Affected products

• Facebook folly: before 2019.11.04.00 — fixed in 2019.11.04.00

How to fix

Upgrade to a fixed version: Facebook folly 2019.11.04.00. Check the vendor advisory for mitigations.

References

• https://github.com/facebook/folly/commit/c321eb588909646c15aefde035fd3133ba32cdee
• https://www.facebook.com/security/advisories/cve-2019-11934
• https://github.com/facebook/folly/commit/c321eb588909646c15aefde035fd3133ba32cdee
• https://www.facebook.com/security/advisories/cve-2019-11934

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