What’s Vulnerable › Vulnerabilities

CVE-2019-3553

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-03-10 · updated 2026-06-17
• Weakness: CWE-770

Description

C++ Facebook Thrift servers would not error upon receiving messages declaring containers of sizes larger than the payload. As a result, malicious clients could send short messages which would result in a large memory allocation, potentially leading to denial of service. This issue affects Facebook Thrift prior to v2020.02.03.00.

Affected products

• Facebook Thrift: before 2020.02.03.00 — fixed in 2020.02.03.00

How to fix

Upgrade to a fixed version: Facebook Thrift 2020.02.03.00. Check the vendor advisory for mitigations.

References

• https://github.com/facebook/fbthrift/commit/3f156207e8a6583d88999487e954320dc18955e6
• https://github.com/facebook/fbthrift/commit/c9a903e5902834e95bbd4ab0e9fa53ba0189f351
• https://www.facebook.com/security/advisories/cve-2019-3553
• https://github.com/facebook/fbthrift/commit/3f156207e8a6583d88999487e954320dc18955e6
• https://github.com/facebook/fbthrift/commit/c9a903e5902834e95bbd4ab0e9fa53ba0189f351
• https://www.facebook.com/security/advisories/cve-2019-3553

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