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CVE-2019-3569

25
FAUCET Score

CVE-2019-3569 describes a vulnerability in HHVM versions 4.3.0 through 4.8.0, 3.30.5 and below, and all versions in the 4.0, 4.1, and 4.2 series, where its FastCGI implementation defaults to binding on all available network interfaces. This misconfiguration allows for unintended direct access to the application, potentially leading to information disclosure. With a CVSS v3.1 score of 7.5 (HIGH), this vulnerability is remotely exploitable with low attack complexity and requires no user interaction, impacting confidentiality. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 3.30.5CPE matchmatch criteria
cpe:2.3:a:facebook:hhvm:*:*:*:*:*:*:*:*
4.0.0CPE matchmatch criteria
cpe:2.3:a:facebook:hhvm:4.0.0:*:*:*:*:*:*:*
4.0.1CPE matchmatch criteria
cpe:2.3:a:facebook:hhvm:4.0.1:*:*:*:*:*:*:*
4.0.2CPE matchmatch criteria
cpe:2.3:a:facebook:hhvm:4.0.2:*:*:*:*:*:*:*
4.0.3CPE matchmatch criteria
cpe:2.3:a:facebook:hhvm:4.0.3:*:*:*:*:*:*:*

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:H/I:N/A:N

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

Exploit Intelligence

EPSS Score
1.49%
Probability of exploitation in next 30 days
EPSS Percentile
71.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0149 is in the 53rd 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/hhvm/commit/97ef580ec2cca9a54da6f9bd9fdd9a455f6d74ed
PatchThird Party Advisory
hhvm.com / blog/2019/06/10/hhvm-4.9.0.html
Release NotesVendor Advisory