HOMEVULNERABILITIESCVE-2019-3558
HIGH

CVE-2019-3558

CWE-834Published: May 6, 2019· Updated: Jun 17, 2026

7.5
CVSS v3.1

Official Description

Python Facebook Thrift servers would not error upon receiving messages with containers of fields of unknown type. As a result, malicious clients could send short messages which would take a long time for the server to parse, potentially leading to denial of service. This issue affects Facebook Thrift prior to v2019.02.18.00.

NVD Source

Technical Analysis

CVE-2019-3558 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 7.5.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Vendors & Products

facebook1 product(s)
thrift
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://github.com/facebook/fbthrift/commit/c5d6e07588cd03061bc54d451a7fa6e84883d62b
PATCHhttps://github.com/facebook/fbthrift/commit/c5d6e07588cd03061bc54d451a7fa6e84883d62b
ADVISORYhttps://www.facebook.com/security/advisories/cve-2019-3558
ADVISORYhttps://www.facebook.com/security/advisories/cve-2019-3558

All References (8)

→
http://www.securityfocus.com/bid/108274Broken Link
→
https://github.com/facebook/fbthrift/commit/c5d6e07588cd03061bc54d451a7fa6e84883d62bPatch · Third Party Advisory
→
https://lists.apache.org/thread.html/rd0e44e8ef71eeaaa3cf3d1b8b41eb25894372e2995ec908ce7624d26%40%3Ccommits.pulsar.apache.org%3E
→
https://www.facebook.com/security/advisories/cve-2019-3558Vendor Advisory
→
http://www.securityfocus.com/bid/108274Broken Link
→
https://github.com/facebook/fbthrift/commit/c5d6e07588cd03061bc54d451a7fa6e84883d62bPatch · Third Party Advisory
→
https://lists.apache.org/thread.html/rd0e44e8ef71eeaaa3cf3d1b8b41eb25894372e2995ec908ce7624d26%40%3Ccommits.pulsar.apache.org%3E
→
https://www.facebook.com/security/advisories/cve-2019-3558Vendor Advisory

Quick Facts

CVE IDCVE-2019-3558
CVSS Score7.5 / 10
SeverityHIGH
WeaknessCWE-834
CISA KEVNo
Affected1 vendor(s)
PublishedMay 6, 2019

Related CVEs (CWE-834)

CVE-2017-12587
8.8
CVE-2021-39924
7.5
CVE-2017-11188
7.5
CVE-2021-39923
7.5
CVE-2017-11409
7.5
CVE-2018-9261
7.5

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2019-3558 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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