AutoCAD: Out-of-bounds Read
CVE-2025-5046 is a high-severity out-of-bounds read 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.
High severity with no evidence of exploitation so far.
What to do
- 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.
- 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.
- 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.
- Read the advisory on autodesk.com for workarounds and exact fixed builds.
- 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
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Autodesk | AutoCAD | 2026 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, 2023.1.8 | 2026.1, 2025.1.3, 2024.1.8, 2023.1.8 |
| Autodesk | AutoCAD LT | 2026 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, 2023.1.8 | 2026.1, 2025.1.3, 2024.1.8, 2023.1.8 |
| Autodesk | AutoCAD Architecture | 2026 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, 2023.1.8 | 2026.1, 2025.1.3, 2024.1.8, 2023.1.8 |
| Autodesk | AutoCAD Electrical | 2026 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, 2023.1.8 | 2026.1, 2025.1.3, 2024.1.8, 2023.1.8 |
| Autodesk | AutoCAD MAP 3D | 2026 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, 2023.1.8 | 2026.1, 2025.1.3, 2024.1.8, 2023.1.8 |
| Autodesk | AutoCAD Mechanical | 2026 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, 2023.1.8 | 2026.1, 2025.1.3, 2024.1.8, 2023.1.8 |
| Autodesk | AutoCAD MEP | 2026 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, 2023.1.8 | 2026.1, 2025.1.3, 2024.1.8, 2023.1.8 |
| Autodesk | AutoCAD Plant 3D | 2026 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, 2023.1.8 | 2026.1, 2025.1.3, 2024.1.8, 2023.1.8 |
| Autodesk | Civil 3D | 2026 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, 2023.1.8 | 2026.1, 2025.1.3, 2024.1.8, 2023.1.8 |
| Autodesk | Advance Steel | 2026 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, 2023.1.8 | 2026.1, 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 linked or imported into Autodesk AutoCAD, can force an Out-of-Bounds Read 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: Out-of-bounds Read
The product reads data past the end, or before the beginning, of the intended buffer.
How developers prevent this class of flaw
- Use a language that provides appropriate memory abstractions.
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: total).
- Record last changed materially (score, affected products, status or references).
References
Other references
Other vulnerabilities in AutoCAD
- 7.8 High severity
- 7.8 High severity
- 7.8 High severity
- 7.8 High severity
- 7.1 High severity
- 7.8 High severity
Recent Out-of-bounds Read vulnerabilities
- 7.5 High severity
- 7.8 High severity
- 8.1 High severity
- 9.8 Critical severity
- 8.1 High severity
- 7.8 High severity
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