What is the CVSS score of CVE-2025-8875?

CVE-2025-8875 has a CVSS 4.0 base score of 9.4 (Critical). CVSS vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H. EPSS exploitation probability: 2.6%.

Is CVE-2025-8875 being actively exploited?

Yes, CVE-2025-8875 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, confirming active in-the-wild exploitation. Immediate patching is required.

How to fix or mitigate CVE-2025-8875?

Within 24 hours: Identify all affected systems and apply vendor patches immediately. Restrict deserialization to trusted data sources and implement integrity checks.

N Central CVE-2025-8875

CRITICAL

Deserialization of Untrusted Data (CWE-502)

2025-08-14 a5532a13-c4dd-4202-bef1-e0b8f2f8d12b

Deserialization N Central N Able

9.4

CVSS 4.0 · Vendor: a5532a13-c4dd-4202-bef1-e0b8f2f8d12b

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Vulnerability Assessment

Weakness	CWE CWE-502 OWASP Top 10:2025 A08:2025 - Software or Data Integrity Failures ASVS 5.0 V1 - Encoding and Sanitization Safe deserialization, type allowlists MITRE ATT&CK 2 techniques across 2 tactics: Execution, Initial Access The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. Sign in to read
Impact	Critical risk (CVSS 9.4). N-central is an RMM platform managing thousands of endpoints. Compromising it provides access to all managed devices.
Exploit ScenarioDerived	An attacker exploits the deserialization to execute code on the N-central server, then uses the legitimate management features to deploy malware to all managed endpoints.

Emergency Immediate action required. Why: CRITICAL + in CISA KEV (actively exploited), no patch available.

Exploited in the wild (CISA KEV) No patch listed yet 2.6% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 28, 2026

N-able N-central before 2025.3.1 contains a deserialization vulnerability allowing local code execution through crafted serialized data.

Earlier versions of this analysis (1)

v1 Mar 28, 2026 - 19:06 CVSS 9.4

A deserialization vulnerability in N-able N-central RMM platform enables local code execution through crafted serialized objects.

RemediationAI

Update N-central. Restrict management server access. Audit managed endpoints for unauthorized changes.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

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

Technical ContextAI · show details

The CWE-502 deserialization processes untrusted data that can be crafted to execute arbitrary code when deserialized by the N-central application.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Vendor (a5532a13-c4dd-4202-bef1-e0b8f2f8d12b) PRIMARY 9.4 CRITICAL

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

Primary rating from Vendor (a5532a13-c4dd-4202-bef1-e0b8f2f8d12b) · only source for this CVE.

CVSS VectorVendor: a5532a13-c4dd-4202-bef1-e0b8f2f8d12b

Attack Vector

Network

Attack Complexity

Low

Attack Requirements

None

Privileges Required

Low

User Interaction

None

Vulnerable system: Confidentiality

High

Vulnerable system: Integrity

High

Vulnerable system: Availability

High

Subsequent system: Confidentiality

High

Subsequent system: Integrity

High

Subsequent system: Availability

High

Lifecycle Timeline

Added to CISA KEV

Oct 27, 2025 - 14:58 cisa

CISA KEV

CVE Published

Aug 14, 2025 - 15:15 nvd

CRITICAL 9.4

DescriptionCVE.org

Deserialization of Untrusted Data vulnerability in N-able N-central allows Local Execution of Code.This issue affects N-central: before 2025.3.1.

Executive ViewAI

Why It Matters

Organizations using Deserialization of Untrusted Data vulnerability in N-able N-central face critical risk from CVE-2025-8875, a insecure deserialization vulnerability rated CVSS 9.4. Insecure deserialization could allow attackers to execute arbitrary code by providing crafted serialized data. This vulnerability is actively exploited in the wild (KEV-listed) and requires immediate remediation. Immediate patching is required per CISA KEV mandate.

Business Impact: Severe

Compensating Controls

Apply vendor patch. If immediate patching is not feasible: (1) Restrict deserialization endpoints; (2) Implement integrity checks on serialized data; (3) Use type-safe alternatives.

Threat Intelligence Overview

EPSS Score

2.6%

Top 14% exploitable

Data Quality

4 sources

Confidence: Medium

NVD

CVE.org

CISA KEV

EPSS

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 Yes

Public POC No

EPSS 2.6%

Patch available No

Active threat Yes

Deciding rule

CRITICAL + in CISA KEV (actively exploited), no patch 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

Immediate

Exploitation· derived

Active

System Exposure· derived

Open

Automatable· derived

Human Impact

Very High

Priority Score

100

Low Medium High Critical

KEV: +50

EPSS: +3

CVSS: +47

PoC: 0

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Insecure Deserialization CRITICAL

Insecure deserialization occurs when an application converts serialized data (a stream of bytes representing an object's state) back into a living object without proper validation.