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CVE-2019-3553

22
FAUCET Score

CVE-2019-3553 describes a denial-of-service vulnerability in Facebook Thrift servers prior to v2020.02.03.00. Malicious clients could send short messages declaring oversized containers, triggering large memory allocations and potentially crashing the server. This vulnerability has a CVSS score of 7.5 (High), indicating it can be exploited remotely with low complexity and without user interaction, leading to a high impact on availability. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 2020.02.03.00CPE matchmatch criteria
cpe:2.3:a:facebook:thrift:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.13%
Probability of exploitation in next 30 days
EPSS Percentile
80.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0213 is in the 65th percentile among its peer group of 51,553 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

github.com / facebook/fbthrift/commit/3f156207e8a6583d88999487e954320dc18955e6
PatchThird Party Advisory
github.com / facebook/fbthrift/commit/c9a903e5902834e95bbd4ab0e9fa53ba0189f351
PatchThird Party Advisory
facebook.com / security/advisories/cve-2019-3553
Vendor Advisory