What is the CVSS score of CVE-2024-45539?

CVE-2024-45539 has a CVSS 3.1 base score of 7.5 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H. EPSS exploitation probability: 0.2%.

How to fix or mitigate CVE-2024-45539?

Within 24 hours: Identify all Synology DSM and DSMUC deployments and document current versions. Within 7 days: Apply vendor patches-DSM update to 7.2.1-69057-2 or later, or 7.2.2-72806 or later; DSMUC update to 3.1.4-23079 or later. Within 30 days: Conduct post-patch validation of all affected systems and review access logs for exploitation attempts targeting the CGI components.

Diskstation Manager CVE-2024-45539

Q: Which versions of Diskstation Manager are affected by CVE-2024-45539?

Synology DiskStation Manager and Unified Controller contain a remote denial-of-service vulnerability (CVE-2024-45539) that allows unauthenticated attackers to crash storage and management systems…. A patch is available.

EUVD-2024-55301 HIGH

Out-of-bounds Write (CWE-787)

2025-12-04 security@synology.com

Buffer Overflow Memory Corruption Synology Diskstation Manager Diskstation Manager Unified Controller

7.5

CVSS 3.1 · Vendor: synology

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Vulnerability Assessment

Weakness	CWE CWE-787 OWASP Top 10:2025 A06:2021 - Vulnerable and Outdated Components ASVS 5.0 V15 - Secure Coding and Architecture Bounds checking, write limits MITRE ATT&CK 2 techniques across 2 tactics: Execution, Privilege Escalation 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	Out-of-bounds reads can leak sensitive information from memory, while out-of-bounds writes can corrupt data or enable code execution. With a CVSS score of 7.5 (HIGH), this represents a significant risk.
Exploit ScenarioDerived	An attacker provides a crafted input that causes the application to read or write beyond buffer boundaries, potentially leaking memory contents or hijacking control flow.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).

Patch available 0.2% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 15, 2026

Out-of-bounds write vulnerability in cgi components in Synology DiskStation Manager (DSM) before 7.2.1-69057-2 and 7.2.2-72806 and Synology Unified Controller (DSMUC) before 3.1.4-23079 allows remote attackers to conduct denial-of-service attacks via unspecified vectors.

Earlier versions of this analysis (1)

v1 Mar 15, 2026 - 16:35 CVSS 7.5

RemediationAI

Implement proper bounds checking on all array and buffer accesses. Use memory-safe languages or static analysis tools to detect OOB issues.

Affected VersionsENISA

DiskStation Manager (DSM) 7.2.2 <7.2.2-72806

DiskStation Manager (DSM) 7.2.1 <7.2.1-69057-2

Unified Controller (DSMUC) 3.1 <3.1.4-23079

Affected Packages

euvd diskstation_manager_dsm fix: 7.2.1-69057-2, 7.2.2-72806

euvd unified_controller_dsmuc fix: 3.1.4-23079

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 2 packages in euvd

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

Technical ContextAI · show details

An out-of-bounds memory access occurs when code reads from or writes to memory locations outside the intended buffer boundaries. This vulnerability is classified as Out-of-bounds Write (CWE-787).

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Vendor (synology) PRIMARY 7.5 HIGH

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

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

CVSS VectorVendor: synology

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Lifecycle Timeline

Analysis Updated

Apr 16, 2026 - 06:23 EUVD-patch-fix

executive summary

Patch available

Apr 16, 2026 - 05:29 EUVD

7.2.2-72806,7.2.1-69057-2,3.1.4-23079

CVE Published

Dec 04, 2025 - 15:15 nvd

HIGH 7.5

Executive ViewAI

Why It Matters

Synology DiskStation Manager and Unified Controller contain a remote denial-of-service vulnerability (CVE-2024-45539) that allows unauthenticated attackers to crash storage and management systems through an out-of-bounds write flaw. Organizations using affected Synology infrastructure risk immediate service interruption without patching, directly impacting data access and business continuity.

Business Impact: High

Compensating Controls

Apply vendor patch. If immediate patching is not feasible, implement network-level access controls to restrict remote connectivity to affected DSM and DSMUC management interfaces; monitor CGI component logs for anomalous requests; establish manual failover procedures for critical storage services.

Threat Intelligence Overview

EPSS Score

0.2%

Top 64% exploitable

Data Quality

4 sources

Confidence: Medium

EUVD

NVD

CVE.org

EPSS

VulDB

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 HIGH

CISA KEV No

Public POC No

EPSS 0.2%

Patch available Yes

Active threat No

Deciding rule

HIGH severity (CVSS 7.0-8.9)

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

Scheduled

Exploitation· derived

None

System Exposure· derived

Open

Automatable· derived

Yes

Human Impact

High

Priority Score

Low Medium High Critical

KEV: 0

EPSS: 0

CVSS: +38

PoC: 0

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Buffer Overflow HIGH

A buffer overflow occurs when a program writes more data to a memory buffer than it was allocated to hold, causing the excess data to spill into adjacent memory regions.

Memory Corruption HIGH

Memory corruption occurs when a program writes data beyond the boundaries of allocated memory regions or accesses memory in unintended ways, violating the integrity of the process's address space.