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CVE-2021-40373

27
FAUCET Score

CVE-2021-40373 is a critical arbitrary code execution vulnerability affecting playSMS versions prior to 1.4.5. An unauthenticated attacker can inject and execute PHP code through the core_main_config interface, leading to full compromise of the system. With a CVSS score of 9.8, this vulnerability poses a severe risk due to its network-based attack vector and low complexity, allowing for complete confidentiality, integrity, and availability impact. Currently, there is no known active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.4.5CPE matchmatch criteria
cpe:2.3:a:playsms:playsms:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
4.74%
Probability of exploitation in next 30 days
EPSS Percentile
90.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0474 is in the 85th percentile among its peer group of 36,897 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 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

Patch Available

Remediation records are not available for this CVE.

References

github.com / maikroservice/CVE-2021-40373
ExploitThird Party Advisory
playsms.org / 2021/09/04/playsms-1-4-5-released
Release NotesVendor Advisory