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CVE-2025-56704

29
FAUCET Score

CVE-2025-56704 is an arbitrary file upload vulnerability in LeptonCMS version 7.3.0, allowing an authenticated attacker to execute arbitrary code by uploading a malicious ZIP or PHP file due to insufficient file validation. This vulnerability carries a high CVSS score of 8.8, indicating a severe risk with low attack complexity and high impact on confidentiality, integrity, and availability. While no public exploits (Metasploit, Nuclei, ExploitDB) or active exploitation (KEV, Hot List) have been identified, and community discussion is minimal, the high FAUCET Risk Score of 90/100 suggests a significant potential for exploitation.

Impacted Technologies

VendorProductVersion(s)CPE
7.3.0CPE matchmatch criteria
cpe:2.3:a:lepton-cms:leptoncms:7.3.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.66%
Probability of exploitation in next 30 days
EPSS Percentile
48.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0066 is in the 39th percentile among its peer group of 17,829 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 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 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

github.com / Kayi626/Vulns/blob/UserAccount/LEPTON_CMS_7.3.0_File_Upload_A.pdf
ExploitThird Party Advisory
github.com / Kayi626/Vulns/blob/UserAccount/LEPTON_CMS_7.3.0_File_Upload_B.pdf
ExploitThird Party Advisory
github.com / Kayi626/Vulns/blob/UserAccount/LEPTON_CMS_7.3.0_File_Upload_C.pdf
ExploitThird Party Advisory