What is the CVSS score of CVE-2020-36881?

CVE-2020-36881 has a CVSS 3.1 base score of 7.8 (High). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.0%.

Is there a public PoC exploit available for CVE-2020-36881?

Yes, a public proof-of-concept exploit is available for CVE-2020-36881. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate CVE-2020-36881?

Within 24 hours: Identify all systems running DiskBoss 7.7.14 and restrict access to trusted users only; disable the 'Add Input Directory' feature if possible and communicate risk to affected teams. Within 7 days: Implement network segmentation to isolate affected systems; monitor for exploitation attempts in logs; evaluate alternative software solutions. Within 30 days: Upgrade to a patched version when available from vendor; if no patch emerges, conduct a formal risk assessment to determine if DiskBoss should be decommissioned or replaced.

Diskboss CVE-2020-36881

EUVD-2020-30823 HIGH

Buffer Overflow (CWE-119)

2025-12-05 disclosure@vulncheck.com

RCE Buffer Overflow Diskboss Flexense

7.8

CVSS 3.1 · NVD

View

Vulnerability Assessment

Weakness	CWE CWE-119 OWASP Top 10:2025 A06:2021 - Vulnerable and Outdated Components ASVS 5.0 V15 - Secure Coding and Architecture Bounds checking, buffer size validation MITRE ATT&CK 2 techniques across 2 tactics: Execution,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	Successful exploitation can lead to arbitrary code execution, denial of service, or privilege escalation depending on the memory layout and protections in place. With a CVSS score of 7.8 (HIGH), this represents a significant risk.
Exploit ScenarioDerived	An attacker sends an oversized input to a vulnerable function, overwriting the return address on the stack to redirect execution to attacker-controlled shellcode.

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

No patch listed yet 0.0% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 15, 2026

Flexsense DiskBoss 7.7.14 contains a local buffer overflow vulnerability in the 'Input Directory' component that allows unauthenticated attackers to execute arbitrary code on the system. Attackers can exploit this by pasting a specially crafted directory path into the 'Add Input Directory' field.

Earlier versions of this analysis (1)

v1 Mar 15, 2026 - 17:08 CVSS 7.8

RemediationAI

Use memory-safe languages or bounds-checked functions. Enable ASLR, DEP/NX, and stack canaries. Apply vendor patches promptly.

Affected VersionsENISA

DiskBoss 7.7.14

Affected Packages

euvd diskboss no fix

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

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

Technical ContextAI · show details

A buffer overflow occurs when data written to a buffer exceeds its allocated size, potentially overwriting adjacent memory and corrupting program state.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 7.8 HIGH

AV:L/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

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

PoC Detected

Dec 10, 2025 - 15:10 vuln.today

Public exploit code

CVE Published

Dec 05, 2025 - 18:15 nvd

HIGH 7.8

Executive ViewAI

Why It Matters

DiskBoss 7.7.14 contains a critical local buffer overflow vulnerability that allows attackers to execute arbitrary code by exploiting the input directory feature. This poses a significant risk to any organization using this software, as attackers could gain system-level access and compromise sensitive data or infrastructure.

Business Impact: High

Compensating Controls

Restrict DiskBoss application access via local firewall rules to authorized personnel only; disable the 'Add Input Directory' feature through application configuration if available; isolate DiskBoss systems on a segregated network segment with limited outbound access; implement application whitelisting to prevent arbitrary code execution; maintain detailed audit logging of all DiskBoss user activity; consider running DiskBoss in a low-privilege user context to limit code execution impact.

Threat Intelligence Overview

EPSS Score

0.0%

Top 89% exploitable

Exploit

POC

Public exploit code exists

Data Quality

6 sources

Confidence: High

EUVD

NVD

CVE.org

EPSS

Exploit-DB

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 HIGH

CISA KEV No

Public POC Yes

EPSS 0.0%

Patch available No

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

Poc

System Exposure· derived

Small

Automatable· derived

Human Impact

High

Priority Score

Low Medium High Critical

KEV: 0

EPSS: 0

CVSS: +39

PoC: +20

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.

Remote Code Execution CRITICAL

Remote Code Execution represents the critical moment when an attacker successfully runs arbitrary code on a target system without physical access.