What is the CVSS score of CVE-2025-56263?

CVE-2025-56263 has a CVSS 3.1 base score of 8.8 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.0%.

Which versions of Sms are affected by CVE-2025-56263?

Organizations using by-night sms V1.0 face significant risk from CVE-2025-56263, a unrestricted file upload vulnerability rated CVSS 8.8.

Is there a public PoC exploit available for CVE-2025-56263?

Yes, a public proof-of-concept exploit is available for CVE-2025-56263. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate CVE-2025-56263?

Within 7 days: Identify all affected systems and apply vendor patches promptly. Review file handling controls and restrict upload directories.

Sms CVE-2025-56263

HIGH

Unrestricted Upload of File with Dangerous Type (CWE-434)

2025-09-16 cve@mitre.org

File Upload Sms

8.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

8.8 HIGH

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 28, 2026 - 19:12 vuln.today

PoC Detected

Oct 17, 2025 - 14:30 vuln.today

Public exploit code

CVE Published

Sep 16, 2025 - 20:15 nvd

HIGH 8.8

DescriptionCVE.org

by-night sms V1.0 has an Arbitrary File Upload vulnerability. The /api/sms/upload/headImg endpoint allows uploading arbitrary files. Users can upload files of any size and type.

AnalysisAI

by-night sms V1.0 has an Arbitrary File Upload vulnerability. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified as Unrestricted File Upload (CWE-434), which allows attackers to upload malicious files that can be executed on the server. by-night sms V1.0 has an Arbitrary File Upload vulnerability. The /api/sms/upload/headImg endpoint allows uploading arbitrary files. Users can upload files of any size and type. Affected products include: By-Night Sms.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Validate file types server-side, store uploads outside webroot, use random filenames, scan for malware.

CVE-2025-56263 vulnerability details – vuln.today

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Sms CVE-2025-56263

Severity by source

CVSS VectorNVD

Lifecycle Timeline

DescriptionCVE.org

AnalysisAI

Technical ContextAI

RemediationAI

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External POC / Exploit Code