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CVE-2021-47734

24
FAUCET Score

CVE-2021-47734 is an authenticated local file inclusion vulnerability in CMSimple 5.4, allowing remote attackers to manipulate PHP session files and execute arbitrary code. This vulnerability has a high CVSS score of 7.8, indicating a high potential for impact on confidentiality, integrity, and availability, with low attack complexity and requiring low privileges. While there is no evidence of active exploitation, public exploit code, or significant community discussion, its high FAUCET Risk Score of 86/100 suggests a notable risk.

Impacted Technologies

VendorProductVersion(s)CPE
5.4CPE matchmatch criteria
cpe:2.3:a:cmsimple:cmsimple:5.4:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 4.0

8.6HIGH

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
HIGH
User Interaction
NONE
VS Confidentiality
HIGH
VS Integrity
HIGH
VS Availability
HIGH
SS Confidentiality
NONE
SS Integrity
NONE
SS Availability
NONE
Exploit Maturity
NOT_DEFINED
CvssVersion
4.0

Exploit Intelligence

EPSS Score
0.73%
Probability of exploitation in next 30 days
EPSS Percentile
50.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0073 is in the 87th percentile among its peer group of 17,061 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

cmsimple.org / en
Product
exploit-db.com / exploits/50547
Exploit
vulncheck.com / advisories/cmsimple-authenticated-local-file-inclusion-remote-code-execution
Third Party Advisory