Is there a public PoC exploit available for CVE-2025-14199?

Yes, a public proof-of-concept exploit is available for CVE-2025-14199. Prioritise patching immediately. EPSS: 0.1%.

Verysync CVE-2025-14199

Q: What is the CVSS score of CVE-2025-14199?

CVE-2025-14199 has a CVSS 4.0 base score of 2.1 (Low). CVSS vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/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. EPSS exploitation probability: 0.1%.

EUVD-2025-201608 LOW

Improper Access Control (CWE-284)

2025-12-07 cna@vuldb.com

Authentication Bypass File Upload Verysync

2.1

CVSS 4.0 · NVD

Severity by source

NVD PRIMARY

2.1 LOW

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Lifecycle Timeline

Severity Changed

Apr 29, 2026 - 01:11 NVD

MEDIUM LOW

CVSS changed

Apr 29, 2026 - 01:11 NVD

6.3 (MEDIUM) 2.1 (LOW)

EUVD ID Assigned

Mar 15, 2026 - 17:50 euvd

EUVD-2025-201608

Analysis Generated

Mar 15, 2026 - 17:50 vuln.today

PoC Detected

Dec 11, 2025 - 18:07 vuln.today

Public exploit code

CVE Published

Dec 07, 2025 - 17:15 cve.org

LOW 2.1

CVE Published

Dec 07, 2025 - 17:15 nvd

MEDIUM 6.3

DescriptionCVE.org

A flaw has been found in Verysync 微力同步 up to 2.21.3. This impacts an unknown function of the file /rest/f/api/resources/f96956469e7be39d/tmp/text.txt?override=false of the component Web Administration Module. Executing manipulation can lead to unrestricted upload. The attack may be performed from remote. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

AnalysisAI

We need to produce a JSON object with all the specified fields, strictly plain text strings, no arrays/objects/nesting. Synthesize all provided data. CVE-2025-14199.

Input:

Description: Verysync 微力同步 up to 2.21.3. Unknown function of file /rest/f/api/resources/f96956469e7be39d/tmp/text.txt?override=false of Web Administration Module. Manipulation leads to unrestricted upload. Remote attack. Exploit published. Vendor contacted but no response.
CVSS Score: 2.1 (but vector is CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/... no CVSS 3.1 vector provided, only CVSS:4.0). The CVSS 4.0 vector score is 2.1. So it's low severity per this score. But CWE-284 Improper Access Control, and tags include Authentication Bypass and File Upload. Conflicting: CVSS 4.0 PR:L (low privileges required), but description says "unknown function", and maybe unrestricted upload could be more severe? But the CVSS 4.0 impact is low integrity, low availability, low confidentiality. That seems low. EPSS 0.06%, so very low exploitation probability. KEV not mentioned, so likely not in KEV. POC available (exploit published, reference link). So I'll treat it as publicly available exploit code. No KEV.

Fields:

product_name: "Verysync" (微力同步 is the product, but just "Verysync"? The CPE says verysync:verysync, product is Verysync). So "Verysync" is fine. Max 3 words.
summary: Must synthesize, not paraphrase. Should mention impact (unrestricted file upload), product, version, exploitation status, EPSS low. Start with specific impact verb. "Unrestricted file upload in Verysync up to 2.21.3 allows remote attackers with low privileges to upload arbitrary files via the Web Administration Module, leading to potential integrity and availability impacts. Public exploit code exists, but EPSS predicts low exploitation probability." Note that vendor did not respond. Active exploitation not confirmed (no KEV). Authentication: CVSS 4.0 PR:L, so low privileges. So authenticated remote at