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Nexo Os CVE-2023-48264

HIGH
Stack-based Buffer Overflow (CWE-121)
2024-01-10 psirt@bosch.com
8.1
CVSS 3.1 · NVD
View

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A06:2021 - Vulnerable and Outdated Components
ASVS 5.0
V15 - Secure Coding and Architecture Stack buffer bounds checking
MITRE ATT&CK

1 technique across 1 tactic: Execution

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Impact

CVSS score of 8.1 (HIGH). Attack characteristics: network attack vector, high complexity, no privileges required, no user interaction not required. EPSS exploitation probability: 1.74%.

Exploit ScenarioDerived

This vulnerability can be exploited remotely over the network. Successful exploitation could compromise the high-severity affected system.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
No patch listed yet 1.7% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 28, 2026

The vulnerability allows an unauthenticated remote attacker to perform a Denial-of-Service (DoS) attack or, possibly, obtain Remote Code Execution (RCE) via a crafted network request. Rated high severity (CVSS 8.1), this vulnerability is remotely exploitable, no authentication required. No vendor patch available.

Earlier versions of this analysis (1)
v1 Mar 28, 2026 - 19:34 CVSS 8.1

Vulnerability in Bosch Nexo-OS.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

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

This vulnerability is classified under CWE-121. The vulnerability allows an unauthenticated remote attacker to perform a Denial-of-Service (DoS) attack or, possibly, obtain Remote Code Execution (RCE) via a crafted network request. Affected products include: Bosch Nexo-Os.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 8.1 HIGH
AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

DescriptionCVE.org

The vulnerability allows an unauthenticated remote attacker to perform a Denial-of-Service (DoS) attack or, possibly, obtain Remote Code Execution (RCE) via a crafted network request.

Executive ViewAI

Why It Matters

Organizations using vulnerability face notable risk from CVE-2023-48264, a stack-based buffer overflow vulnerability rated CVSS 8.1. Exploitation could allow attackers to corrupt memory, crash the application, or potentially execute arbitrary code. Organizations should apply vendor updates when available and consider compensating controls in the interim.

Business Impact: High
Compensating Controls

Apply vendor patch. If immediate patching is not feasible: (1) Enable ASLR and DEP where available; (2) Implement network segmentation; (3) Monitor for exploitation indicators.

Threat Intelligence Overview

EPSS Score
1.7%
Top 18% exploitable
Data Quality
3 sources
Confidence: Low

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 1.7%
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
None
System Exposure· derived
Open
Automatable· derived
No
Human Impact
High

Priority Score

42
Low Medium High Critical
KEV: 0
EPSS: +2
CVSS: +40
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

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.

A stack-based buffer overflow occurs when a program writes more data to a buffer located on the stack than it was allocated to hold.

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

Affected Products (CPE)CVE.org

cpe:2.3:o:bosch:nexo-os:*:*:*:*:*:*:*:*
CVE-2023-48253 HIGH
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CVE-2023-48266 HIGH
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The vulnerability allows an unauthenticated remote attacker to perform a Denial-of-Service (DoS) attack or, possibly, ob

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The vulnerability allows an unauthenticated remote attacker to perform a Denial-of-Service (DoS) attack or, possibly, ob

CVE-2023-48263 HIGH
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The vulnerability allows an unauthenticated remote attacker to perform a Denial-of-Service (DoS) attack or, possibly, ob

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The vulnerability allows an unauthenticated remote attacker to perform a Denial-of-Service (DoS) attack or, possibly, ob

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The vulnerability allows a remote attacker to authenticate to the web application with high privileges through multiple

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The vulnerability allows a remote attacker to access sensitive data inside exported packages or obtain up to Remote Code

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The vulnerability allows an unauthenticated remote attacker to upload arbitrary files under the context of the applicati

CVE-2023-48246 MEDIUM
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The vulnerability allows a remote attacker to download arbitrary files in all paths of the system under the context of t

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