What is the CVSS score of CVE-2021-41538?

CVE-2021-41538 has a CVSS 3.1 base score of 3.3 (Low). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N. EPSS exploitation probability: 0.9%.

Is there a patch available for CVE-2021-41538?

Yes, a patch is available for CVE-2021-41538. Update the affected software to the latest version immediately.

Solid Edge CVE-2021-41538

LOW

Access of Uninitialized Pointer (CWE-824)

2021-09-28 productcert@siemens.com

Information Disclosure Memory Corruption Siemens Solid Edge Nx 1984 Firmware Nx 1988 Firmware Nx 1957 Firmware Nx 1961 Firmware Nx 1965 Firmware Nx 1969 Firmware

3.3

CVSS 3.1 · NVD

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Vulnerability Assessment

Weakness	CWE CWE-824 ASVS 5.0 V15 - Secure Coding and Architecture Uninitialized pointer prevention 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. Sign in to read
Impact	CVSS score of 3.3 (LOW). Attack characteristics: local attack vector, low complexity, no privileges required, user interaction required.
Exploit ScenarioDerived	Successful exploitation could compromise the low-severity affected system.

Monitor Track and reassess. Why: LOW severity (CVSS 0.1-3.9).

Patch available 0.9% exploitation probability (EPSS)

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AnalysisAI

A vulnerability has been identified in NX 1953 Series (All versions < V1973.3700), NX 1980 Series (All versions < V1988), Solid Edge SE2021 (All versions < SE2021MP8). Rated low severity (CVSS 3.3), this vulnerability is no authentication required, low attack complexity.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. 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-824. A vulnerability has been identified in NX 1953 Series (All versions < V1973.3700), NX 1980 Series (All versions < V1988), Solid Edge SE2021 (All versions < SE2021MP8). The affected application is vulnerable to information disclosure by unexpected access to an uninitialized pointer while parsing user-supplied OBJ files. An attacker could leverage this vulnerability to leak information from unexpected memory locations (ZDI-CAN-13770). Affected products include: Siemens Solid Edge, Siemens Nx 1984 Firmware, Siemens Nx 1988 Firmware, Siemens Nx 1957 Firmware, Siemens Nx 1961 Firmware.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 3.3 LOW

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

None

DescriptionNVD

A vulnerability has been identified in NX 1953 Series (All versions < V1973.3700), NX 1980 Series (All versions < V1988), Solid Edge SE2021 (All versions < SE2021MP8). The affected application is vulnerable to information disclosure by unexpected access to an uninitialized pointer while parsing user-supplied OBJ files. An attacker could leverage this vulnerability to leak information from unexpected memory locations (ZDI-CAN-13770).

Threat Intelligence Overview

EPSS Score

0.9%

Top 43% exploitable

Data Quality

2 sources

Confidence: Low

NVD

CVE.org

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 LOW

CISA KEV No

Public POC No

EPSS 0.9%

Patch available Yes

Active threat No

Deciding rule

LOW severity (CVSS 0.1-3.9)

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

Defer

Exploitation· derived

None

System Exposure· derived

Small

Automatable· derived

Human Impact· derived

Low

Priority Score

Low Medium High Critical

KEV: 0

EPSS: +1

CVSS: +16

PoC: 0

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

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.

Information Disclosure MEDIUM

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

Affected Products (CPE)NVD

cpe:2.3:a:siemens:solid_edge:*:*:*:*:*:*:*:*

cpe:2.3:a:siemens:solid_edge:se2021:-:*:*:*:*:*:*

cpe:2.3:a:siemens:solid_edge:se2021:maintenance_pack1:*:*:*:*:*:*

cpe:2.3:a:siemens:solid_edge:se2021:maintenance_pack2:*:*:*:*:*:*

cpe:2.3:a:siemens:solid_edge:se2021:maintenance_pack3:*:*:*:*:*:*

cpe:2.3:a:siemens:solid_edge:se2021:maintenance_pack4:*:*:*:*:*:*

cpe:2.3:a:siemens:solid_edge:se2021:maintenance_pack5:*:*:*:*:*:*

cpe:2.3:a:siemens:solid_edge:se2021:maintenance_pack6:*:*:*:*:*:*

cpe:2.3:a:siemens:solid_edge:se2021:maintenance_pack7:*:*:*:*:*:*

cpe:2.3:o:siemens:nx_1984_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:siemens:nx_1988_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:siemens:nx_1957_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:siemens:nx_1961_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:siemens:nx_1965_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:siemens:nx_1969_firmware:*:*:*:*:*:*:*:*

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