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CVE-2017-5493

20
FAUCET Score

CVE-2017-5493 is a high-severity vulnerability affecting WordPress versions prior to 4.7.1, specifically within the wp-includes/ms-functions.php component of the Multisite API. It stems from improper random number generation for keys, allowing remote attackers to bypass access restrictions during site or user signups. With a CVSS v3 score of 7.5, this vulnerability is easily exploitable over the network with low attack complexity, potentially leading to high integrity impact without requiring user interaction. While no active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB) has been identified, and community discussion and media coverage are minimal, its FAUCET Risk Score of 58/100 indicates a notable risk.

Impacted Technologies

VendorProductVersion(s)CPE
<= 4.7CPE matchmatch criteria
cpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
2.79%
Probability of exploitation in next 30 days
EPSS Percentile
84.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0278 is in the 73rd percentile among its peer group of 51,553 CVEs.

Social Chatter

No social media mentions found for this CVE.

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

codex.wordpress.org / Version_4.7.1
Release NotesVendor Advisory
github.com / WordPress/WordPress/commit/cea9e2dc62abf777e06b12ec4ad9d1aaa49b29f4
Patch
wordpress.org / news/2017/01/wordpress-4-7-1-security-and-maintenance-release
Vendor Advisory
wpvulndb.com / vulnerabilities/8721
debian.org / security/2017/dsa-3779
openwall.com / lists/oss-security/2017/01/14/6
Mailing ListThird Party Advisory
securityfocus.com / bid/95401
securitytracker.com / id/1037591