What is the CVSS score of CVE-2025-65548?

CVE-2025-65548 has a CVSS 3.1 base score of 9.1 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N. EPSS exploitation probability: 0.1%.

Is there a public PoC exploit available for CVE-2025-65548?

Yes, a public proof-of-concept exploit is available for CVE-2025-65548. Prioritise patching immediately. EPSS: 0.1%.

How to fix or mitigate CVE-2025-65548?

Within 24 hours: Identify all affected systems and apply vendor patches immediately. Monitor vendor channels for patch availability.

Nutshell CVE-2025-65548

EUVD-2025-201796 CRITICAL

Improper Validation of Specified Quantity in Input (CWE-1284)

2025-12-08 cve@mitre.org

Information Disclosure Nutshell

9.1

CVSS 3.1 · Vendor: mitre

View

Vulnerability Assessment

Weakness	CWE CWE-1284 OWASP Top 10:2025 A06:2021 - Vulnerable and Outdated Components ASVS 5.0 V2 - Validation and Business Logic Input size validation
Impact	CVSS 9.1. EPSS 0.1%. Public PoC/exploit available. No patch confirmed.
Exploit ScenarioDerived	An attacker could exploit this vulnerability in NUT-14 to compromise the security of affected deployments, potentially impacting confidentiality, integrity, or availability.

Act Now Prioritize within 24-48h. Why: CRITICAL severity + public POC available.

Patch available 0.1% exploitation probability (EPSS)

Get an e-mail when this CVE is exploited, patched or re-scored. Free account.

Alert me

AnalysisAIv1 – Mar 15, 2026

A security vulnerability in NUT-14 (CVSS 9.1) that allows cashu tokens. Risk factors: public PoC available.

Earlier versions of this analysis (1)

v1 Mar 15, 2026 - 17:54 CVSS 9.1

RemediationAI

Monitor vendor channels for patch availability.

Affected VersionsENISA

n/a n/a

Affected Packages

pypi cashu fix: 0.18.0

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in pypi

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

Vulnerability type not specified by vendor. CVSS 9.1 indicates critical severity with likely remote exploitation vector. Affects NUT-14.

Know when Nutshell gets its next vulnerability

Watch products and get an email when something new is published
Check this CVE against your own stack and servers
Exploit and PoC references, threat intelligence from 22 sources

Continue with Google Continue with GitHub

No credit card · 7-day full trial

Severity by source

Vendor (mitre) PRIMARY 9.1 CRITICAL

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

Primary rating from Vendor (mitre) · only source for this CVE.

CVSS VectorVendor: mitre

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

None

Lifecycle Timeline

PoC Detected

Dec 15, 2025 - 15:56 vuln.today

Public exploit code

CVE Published

Dec 08, 2025 - 19:15 nvd

CRITICAL 9.1

DescriptionCVE.org

NUT-14 allows cashu tokens to be created with a preimage hash. However, nutshell (cashubtc/nuts) before 0.18.0 do not validate the size of preimage when the token is spent. The preimage is stored by the mint and attacker can exploit this vulnerability to fill the mint's db nd disk with arbitrary data.

Executive ViewAI

Why It Matters

Organizations using NUT-14 face critical risk from CVE-2025-65548 rated CVSS 9.1. Successful exploitation could critically impact the confidentiality, integrity, and availability of affected systems. Proof-of-concept code is publicly available, increasing the risk of exploitation. Organizations should apply vendor updates immediately when available and implement compensating controls in the interim.

Business Impact: Severe

Compensating Controls

Apply vendor patch. If immediate patching is not feasible: (1) Implement network-level access controls to limit exposure; (2) Enable enhanced monitoring and alerting; (3) Apply principle of least privilege.

Threat Intelligence Overview

EPSS Score

0.1%

Top 71% exploitable

Exploit

POC

Public exploit code exists

Data Quality

5 sources

Confidence: Medium

EUVD

NVD

CVE.org

EPSS

GitHub

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity CRITICAL

CISA KEV No

Public POC Yes

EPSS 0.1%

Patch available Yes

Active threat No

Deciding rule

CRITICAL severity + public POC available

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived

Out-of-Cycle

Exploitation· derived

Poc

System Exposure· derived

Open

Automatable· derived

Yes

Human Impact

Very High

Priority Score

Low Medium High Critical

KEV: 0

EPSS: 0

CVSS: +46

PoC: +20

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Information Disclosure MEDIUM

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.