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Solid Edge CVE-2025-40809

HIGH
Out-of-bounds Write (CWE-787)
2025-10-14 productcert@siemens.com
7.3
CVSS 4.0 · Vendor: siemens
View

Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Deliver crafted PRT file to engineer
  2. Delivery
    User opens file in Solid Edge
  3. Exploit
    Trigger out-of-bounds write in parser
  4. Execution
    Corrupt process memory
  5. Impact
    Execute code as current user

Vulnerability Assessment

Weakness
CWE
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.

Exploitation Conditions

Exploitation requires a victim to open a specially crafted PRT (Solid Edge part) file in a vulnerable Solid Edge installation (SE2024 < V224.0 Update 14 or SE2025 < V225.0 Update 6); the vulnerable code path is the PRT file parser. Key LIMITING factors: the attack is local/file-based (AV:L) with no remote network trigger, it mandates passive user interaction (UI:P) - opening the attacker-supplied file - and carries HIGH attack complexity (AC:H), meaning reliable code execution is difficult to achieve versus a mere crash. No special non-default product configuration is needed; any affected version parsing the malicious PRT is exposed.

Impact

This is a genuinely moderate, not critical, priority. The CVSS 4.0 vector (AV:L/AC:H/AT:N/PR:N/UI:P) and the 7.3 (High) score are driven by full C/I/A impact on the vulnerable system (VC:H/VI:H/VA:H), consistent with an out-of-bounds write (CWE-787) that can yield code execution. However, every exploitation-ease signal points downward: the vector is LOCAL (AV:L), attack complexity is HIGH (AC:H) reflecting the difficulty of turning an OOB write into reliable code execution, and passive user interaction (UI:P) is required - the victim must open a malicious PRT file. EPSS reinforces low real-world urgency at 0.14% (3rd percentile), and there is no CISA KEV listing and no public exploit identified, so no public exploit identified at time of analysis. The signals are internally consistent (local, user-interaction-dependent file-parsing bug with low exploitation probability) rather than conflicting. Note a nuance: PR:N labels this unauthenticated, but that is somewhat academic for a local file-open flaw - the real gating factor is social-engineering a user into opening a crafted file, not an authentication boundary. Net: patch within normal cycles; this is not a drop-everything emergency.

Exploit ScenarioDerived

An attacker crafts a malicious Solid Edge PRT part file and delivers it to an engineer via email, a shared project repository, or a compromised supplier, relying on the victim to open it in a vulnerable Solid Edge version. When the file is parsed, the out-of-bounds write corrupts memory, crashing the application or potentially executing code in the context of the current user. No public exploit is known, and the HIGH attack complexity means weaponizing the OOB write into reliable code execution is non-trivial.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
No patch listed yet 0.1% exploitation probability (EPSS)

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AnalysisAIv1 – Oct 18, 2026

Out-of-bounds write in Siemens Solid Edge's .PRT part-file parser allows an attacker who convinces a user to open a specially crafted part file to crash the application or execute code in the context of the current process, giving access to whatever the logged-in engineer can reach - design data and the workstation itself. Only SE2024 builds below V224.0 Update 14 and SE2025 builds below V225.0 Update 6 are affected; no privileges are required (PR:N) but the attack is file-based and local, demands a high degree of crafting precision (AC:H), and depends on the victim opening the supplied file. No public exploit code or active exploitation has been identified at time of analysis, and EPSS is 0.14% (3rd percentile), consistent with a targeted, socially-delivered file-parsing flaw rather than a broadly exploited one.

RemediationAI

Vendor-released patch: upgrade Solid Edge SE2024 to V224.0 Update 14 or later, or Solid Edge SE2025 to V225.0 Update 6 or later, following Siemens ProductCERT advisory SSA-541582 (https://cert-portal.siemens.com/productcert/html/ssa-541582.html) and the Siemens Support Center/GTAC download process for maintenance updates. Until updates are deployed, treat .PRT files as untrusted input: block PRT attachments at the email and web gateways and require designs to be exchanged through a controlled repository - the trade-off is that partners can no longer send parts by mail and must be onboarded to the repository. Where external CAD data is unavoidable, open it first in a disposable VM or sandbox with no access to production PLM shares, since a successful exploit runs with the opened process's privileges. Ensure Windows exploit mitigations (ASLR, DEP, Control Flow Guard) remain enabled on engineering workstations - these raise the bar for turning the memory corruption into code execution but do not prevent the crash. There is no supported switch that disables PRT parsing without removing core part-open functionality, so file-source restrictions and isolation are the practical compensating controls; correlate Solid Edge crash reports with recently delivered part files as a detection signal.

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 flaw is a CWE-787 out-of-bounds write in the parser Solid Edge uses to deserialize binary PRT (part) documents. PRT files embed structured geometry and metadata records whose length and offset fields are trusted by the parser; a crafted file can make those values exceed the allocated destination buffer during deserialization, so attacker-controlled data is written past the end of an allocated object. Consequences range from an immediate access violation (denial of service) to controlled corruption of adjacent heap memory, which under favorable conditions can be steered into code execution inside the Solid Edge process. The authoritative assessment rates this CVSS:3.1 AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H - matching the CNA's CVSS:4.0 AV:L/AC:H/PR:N/UI:P/VC:H/VI:H/VA:H vector in substance: local trigger, no privileges required, passive user interaction (opening the file), and high attack complexity because reliable exploitation must survive heap layout variation and standard Windows mitigations (ASLR, DEP, CFG). Scope is unchanged (S:U), so impact is confined to the Solid Edge process and the user's session rather than the OS kernel; there is no remote or unauthenticated network vector, and no non-default configuration is needed for the parser to be reachable.

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Severity by source

Vendor (siemens) PRIMARY 7.3 HIGH
CVSS:4.0/AV:L/AC:H/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
vuln.today AI 7.0 HIGH

File must be opened locally by a user so AV:L and UI:R; crafting a reliable OOB-write exploit is hard so AC:H; no privileges needed (PR:N) and full process-context impact gives C/I/A:H.

3.1 AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
4.0 AV:L/AC:H/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Primary rating from Vendor (siemens).

CVSS VectorVendor: siemens

Attack Vector
Local
Attack Complexity
High
Attack Requirements
None
Privileges Required
None
User Interaction
Passive
Vulnerable system: Confidentiality
High
Vulnerable system: Integrity
High
Vulnerable system: Availability
High
Subsequent system: Confidentiality
None
Subsequent system: Integrity
None
Subsequent system: Availability
None

DescriptionCVE.org

A vulnerability has been identified in Solid Edge SE2024 (All versions < V224.0 Update 14), Solid Edge SE2025 (All versions < V225.0 Update 6). The affected applications contains an out of bounds write vulnerability while parsing specially crafted PRT files. This could allow an attacker to crash the application or execute code in the context of the current process.

Executive ViewAI

Why It Matters

Siemens Solid Edge is exposed to a high-severity file-parsing flaw that could let a crafted .PRT file crash an engineering workstation or run code with the opening user’s permissions, potentially exposing design data and local workstation access. The risk is concentrated on affected SE2024 and SE2025 engineering endpoints, but exploitation depends on a user opening a malicious file and no public exploit identified at time of analysis. No vendor-released patch identified at time of analysis, so leadership should prioritize inventory, user awareness, and interim file-handling controls.

Business Impact: High
Compensating Controls

No vendor-released patch identified at time of analysis; interim controls include restricting .PRT files to trusted sources, filtering external attachments, applying Mark-of-the-Web or Protected View where supported, running Solid Edge with least privilege, segmenting engineering workstations, and monitoring for Solid Edge crashes or suspicious process creation.

Threat Intelligence Overview

EPSS Score
0.1%
Top 97% exploitable
Prevalence
Low
industry-specific CAD software on engineering workstations only
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 0.1%
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
Defer
Exploitation· derived
None
System Exposure· derived
Small
Automatable· derived
No
Human Impact
High

Priority Score

36
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +36
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.

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.

Affected Products (CPE)CVE.org

cpe:2.3:a:siemens:solid_edge_se2024:-:*:*:*:*:*:*:*
cpe:2.3:a:siemens:solid_edge_se2024:224.0:-:*:*:*:*:*:*
cpe:2.3:a:siemens:solid_edge_se2024:224.0:update_0001:*:*:*:*:*:*
cpe:2.3:a:siemens:solid_edge_se2024:224.0:update_00010:*:*:*:*:*:*
cpe:2.3:a:siemens:solid_edge_se2024:224.0:update_00011:*:*:*:*:*:*
cpe:2.3:a:siemens:solid_edge_se2024:224.0:update_00012:*:*:*:*:*:*
cpe:2.3:a:siemens:solid_edge_se2024:224.0:update_00013:*:*:*:*:*:*
cpe:2.3:a:siemens:solid_edge_se2024:224.0:update_0002:*:*:*:*:*:*
cpe:2.3:a:siemens:solid_edge_se2024:224.0:update_0003:*:*:*:*:*:*
cpe:2.3:a:siemens:solid_edge_se2024:224.0:update_0004:*:*:*:*:*:*
cpe:2.3:a:siemens:solid_edge_se2024:224.0:update_0005:*:*:*:*:*:*
cpe:2.3:a:siemens:solid_edge_se2024:224.0:update_0006:*:*:*:*:*:*
cpe:2.3:a:siemens:solid_edge_se2024:224.0:update_0007:*:*:*:*:*:*
cpe:2.3:a:siemens:solid_edge_se2024:224.0:update_0008:*:*:*:*:*:*
cpe:2.3:a:siemens:solid_edge_se2024:224.0:update_0009:*:*:*:*:*:*
cpe:2.3:a:siemens:solid_edge_se2025:-:*:*:*:*:*:*:*
cpe:2.3:a:siemens:solid_edge_se2025:225.0:-:*:*:*:*:*:*
cpe:2.3:a:siemens:solid_edge_se2025:225.0:update_0001:*:*:*:*:*:*
cpe:2.3:a:siemens:solid_edge_se2025:225.0:update_0002:*:*:*:*:*:*
cpe:2.3:a:siemens:solid_edge_se2025:225.0:update_0003:*:*:*:*:*:*
+ 2 more
CVE-2024-34773 HIGH
7.8 May 14

A vulnerability has been identified in Solid Edge (All versions < V224.0 Update 2). Rated high severity (CVSS 7.8), this

CVE-2024-34772 HIGH
7.8 May 14

A vulnerability has been identified in Solid Edge (All versions < V224.0 Update 4). Rated high severity (CVSS 7.8), this

CVE-2024-34771 HIGH
7.8 May 14

A vulnerability has been identified in Solid Edge (All versions < V224.0 Update 2). Rated high severity (CVSS 7.8), this

CVE-2024-33493 HIGH
7.8 May 14

A vulnerability has been identified in Solid Edge (All versions < V224.0 Update 5). Rated high severity (CVSS 7.8), this

CVE-2024-33492 HIGH
7.8 May 14

A vulnerability has been identified in Solid Edge (All versions < V224.0 Update 5). Rated high severity (CVSS 7.8), this

CVE-2024-33491 HIGH
7.8 May 14

A vulnerability has been identified in Solid Edge (All versions < V224.0 Update 5). Rated high severity (CVSS 7.8), this

CVE-2024-33490 HIGH
7.8 May 14

A vulnerability has been identified in Solid Edge (All versions < V224.0 Update 5). Rated high severity (CVSS 7.8), this

CVE-2024-33489 HIGH
7.8 May 14

A vulnerability has been identified in Solid Edge (All versions < V224.0 Update 5). Rated high severity (CVSS 7.8), this

CVE-2025-40812 HIGH
7.3 Oct 14

Out-of-bounds read in Siemens Solid Edge SE2024 before V224.0 Update 14 and SE2025 before V225.0 Update 6 can crash the

CVE-2025-40811 HIGH
7.3 Oct 14

Out-of-bounds read in Siemens Solid Edge SE2024 (before V224.0 Update 14) and SE2025 (before V225.0 Update 6) can crash

CVE-2025-40810 HIGH
7.3 Oct 14

Out-of-bounds write in Siemens Solid Edge SE2024 and SE2025 PRT-file parsing lets a crafted part file crash the applicat

CVE-2024-54095 HIGH
7.3 Dec 10

A vulnerability has been identified in Solid Edge SE2024 (All versions < V224.0 Update 10). Rated high severity (CVSS 7.

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