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CVE-2016-20052

35
FAUCET Score

CVE-2016-20052 is a critical unrestricted file upload vulnerability affecting Snews CMS 1.7, enabling unauthenticated attackers to upload arbitrary PHP files to the snews_files directory and achieve remote code execution. Rated with a CVSS score of 9.8 (CRITICAL), it poses a significant threat due to its network attack vector, low attack complexity, and lack of required privileges or user interaction, leading to high impact across confidentiality, integrity, and availability. Although not listed in CISA's KEV catalog, this vulnerability is on an active "Hot List" and has received some community attention, including recent social media mentions. No public exploit code is currently available in Metasploit, Nuclei, or ExploitDB.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.7CPE matchmatch criteria
cpe:2.3:a:snewscms:snews:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 4.0

9.3CRITICAL

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/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
NONE
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
0.95%
Probability of exploitation in next 30 days
EPSS Percentile
57.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0095 is in the 43rd percentile among its peer group of 36,862 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

Remediation records are not available for this CVE.

References

exploit-db.com / exploits/40706
ExploitVDB Entry
vulncheck.com / advisories/snews-cms-unrestricted-file-upload-via-snews-files
Third Party Advisory