CyberSecBulletin
CVE-2025-5047NVD status: Analyzed

AutoCAD: Use of Uninitialized Variable

Published Updated By the CyberSecBulletin desk

CVE-2025-5047 is a high-severity use of uninitialized variable vulnerability in AutoCAD from Autodesk, with a CVSS 3.1 base score of 7.8 out of 10. It can be exploited with local access to the system by an unauthenticated attacker, but only if a user takes part, for example by opening a link or file. The record lists versions 2026.1, 2025.1.3, 2024.1.8 as the first without the flaw, so updating AutoCAD to one of those releases or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.2% chance of exploitation within 30 days, which is low compared with other CVEs.

Next patch cycle

High severity with no evidence of exploitation so far.

What to do

  1. Update AutoCAD to 2026.1 or 2025.1.3 or 2024.1.8 or 2023.1.8, whichever matches your release line, or a later version.
  2. Update AutoCAD LT to 2026.1 or 2025.1.3 or 2024.1.8 or 2023.1.8, whichever matches your release line, or a later version.
  3. Update AutoCAD Architecture to 2026.1 or 2025.1.3 or 2024.1.8 or 2023.1.8, whichever matches your release line, or a later version.
  4. Read the advisory on autodesk.com for workarounds and exact fixed builds.
  5. Because the attack needs a user to take part, warn users about unexpected links and files related to this product until it is patched.

Affected products and versions

VendorProductAffected versionsFixed in
AutodeskAutoCAD2026 up to, but not including, 2026.1; 2025 up to, but not including, 2025.1.3; 2024 up to, but not including, 2024.1.8; 2023 up to, but not including, 2023.1.82026.1, 2025.1.3, 2024.1.8, 2023.1.8
AutodeskAutoCAD LT2026 up to, but not including, 2026.1; 2025 up to, but not including, 2025.1.3; 2024 up to, but not including, 2024.1.8; 2023 up to, but not including, 2023.1.82026.1, 2025.1.3, 2024.1.8, 2023.1.8
AutodeskAutoCAD Architecture2026 up to, but not including, 2026.1; 2025 up to, but not including, 2025.1.3; 2024 up to, but not including, 2024.1.8; 2023 up to, but not including, 2023.1.82026.1, 2025.1.3, 2024.1.8, 2023.1.8
AutodeskAutoCAD Electrical2026 up to, but not including, 2026.1; 2025 up to, but not including, 2025.1.3; 2024 up to, but not including, 2024.1.8; 2023 up to, but not including, 2023.1.82026.1, 2025.1.3, 2024.1.8, 2023.1.8
AutodeskAutoCAD MAP 3D2026 up to, but not including, 2026.1; 2025 up to, but not including, 2025.1.3; 2024 up to, but not including, 2024.1.8; 2023 up to, but not including, 2023.1.82026.1, 2025.1.3, 2024.1.8, 2023.1.8
AutodeskAutoCAD Mechanical2026 up to, but not including, 2026.1; 2025 up to, but not including, 2025.1.3; 2024 up to, but not including, 2024.1.8; 2023 up to, but not including, 2023.1.82026.1, 2025.1.3, 2024.1.8, 2023.1.8
AutodeskAutoCAD MEP2026 up to, but not including, 2026.1; 2025 up to, but not including, 2025.1.3; 2024 up to, but not including, 2024.1.8; 2023 up to, but not including, 2023.1.82026.1, 2025.1.3, 2024.1.8, 2023.1.8
AutodeskAutoCAD Plant 3D2026 up to, but not including, 2026.1; 2025 up to, but not including, 2025.1.3; 2024 up to, but not including, 2024.1.8; 2023 up to, but not including, 2023.1.82026.1, 2025.1.3, 2024.1.8, 2023.1.8
AutodeskCivil 3D2026 up to, but not including, 2026.1; 2025 up to, but not including, 2025.1.3; 2024 up to, but not including, 2024.1.8; 2023 up to, but not including, 2023.1.82026.1, 2025.1.3, 2024.1.8, 2023.1.8
AutodeskAdvance Steel2026 up to, but not including, 2026.1; 2025 up to, but not including, 2025.1.3; 2024 up to, but not including, 2024.1.8; 2023 up to, but not including, 2023.1.82026.1, 2025.1.3, 2024.1.8, 2023.1.8

Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.

How the severity score breaks down

Attack vector
LocalThe attacker needs local access or must trick a user into running something.
Attack complexity
LowNo special conditions are needed; the attack works reliably.
Privileges required
NoneNo account or login is needed.
User interaction
RequiredA user must take an action such as opening a file or link.
Scope
UnchangedImpact stays within the vulnerable component.
Confidentiality
HighAll data handled by the component can be read.
Integrity
HighData or code can be modified at will.
Availability
HighThe component can be taken down completely.

Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H. Scored by CNA (autodesk.com).

Official description

A maliciously crafted DGN file, when parsed through Autodesk AutoCAD, can force an Uninitialized Variable vulnerability. A malicious actor can leverage this vulnerability to cause a crash, read sensitive data, or execute arbitrary code in the context of the current process.

Source: the CVE record as published by its numbering authority, via NVD and CVE.org.

The underlying weakness: Use of Uninitialized Variable

The code uses a variable that has not been initialized, leading to unpredictable or unintended results.

How developers prevent this class of flaw

  • Ensure that critical variables are initialized before first use.
  • Most compilers will complain about the use of uninitialized variables if warnings are turned on.
  • When using a language that does not require explicit declaration of variables, run or compile the software in a mode that reports undeclared or unknown variables. This may indicate the presence of a typographic error in the variable's name.

More Use of Uninitialized Variable vulnerabilities (CWE-457)

Timeline

  1. CVE record published.
  2. CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: total).
  3. Record last changed materially (score, affected products, status or references).

References

Other vulnerabilities in AutoCAD

All AutoCAD vulnerabilities

Recent Use of Uninitialized Variable vulnerabilities

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