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NVD / CVE Program· CNA autodesk

CVE-2021-27040: A maliciously crafted DWG file can be forced to read beyond allocated boundaries when parsing the DWG file.

LowCVSS 3.3 · v3.1—No exploit No fix recorded

Noroxi assessment

Priority: Monitor (action score 14/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 2.7% (FIRST EPSS); higher than 86.3% of all records.
  • Someone with local access to the system can trigger it. No account or password is required. A user must open a link or visit a page. No special conditions are required; it is repeatable.
  • According to the record, no fixed version is available yet.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Update when a fix is released; follow the vendor's advisory.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

A maliciously crafted DWG file can be forced to read beyond allocated boundaries when parsing the DWG file. This vulnerability can be exploited to execute arbitrary code.

Published
Jun 25, 2021
Updated
Jun 16, 2026
EPSS
2.7% · 86th percentile

Report tools

JSON

Action score

14

Monitor

Low priority for now.

CVSS
13 / 40 · 3.3 / 10
CISA KEV
0 / 30 · Not listed
EPSS
1 / 30 · 2.7%

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • No fixed version yet

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2021-27040

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
autodeskadvance steel
autodeskautocad
autodeskautocad architecture
autodeskautocad electrical
autodeskautocad lt
autodeskautocad map 3d
autodeskautocad mechanical
autodeskautocad mep
autodeskautocad plant 3d
autodeskcivil 3d
autodeskdwg trueview
iconicsgenesis64

and 1 more

Versions reported by the vendor

Affected version ranges reported by the assigning authority (autodesk). Independent of NVD's CPE analysis and usually ahead of it.

  • n/a Autodesk Advanced Steel, Civil 3D, AutoCAD, AutoCAD LT, AutoCAD Architecture, AutoCAD Electrical, AutoCAD Map 3D, AutoCAD Mechanical, AutoCAD MEP, AutoCAD Plant 3D

    • 2022, 2021, 2020, 2019affected
Affected versions · NVD (20)

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • autodesk advance steel2019 and later · before 2019.1.3
  • autodesk advance steel2020 and later · before 2020.1.4
  • autodesk advance steel2021 and later · before 2021.1.1
  • autodesk advance steel2022 and later · before 2022.0.1
  • autodesk autocad2019 and later · before 2019.1.3
  • autodesk autocad2020 and later · before 2020.1.4
  • autodesk autocad2021 and later · before 2021.1.1
  • autodesk autocad2022 and later · before 2022.0.1
  • autodesk autocad architecture2019 and later · before 2019.1.3
  • autodesk autocad architecture2020 and later · before 2020.1.4
  • autodesk autocad architecture2021 and later · before 2021.1.1
  • autodesk autocad architecture2022 and later · up to 2022.0.1 inclusive
  • autodesk autocad electrical2019 and later · before 2019.1.3
  • autodesk autocad electrical2020 and later · before 2020.1.4
  • autodesk autocad electrical2021 and later · before 2021.1.1
  • autodesk autocad electrical2022 and later · before 2022.0.1
  • autodesk autocad lt2019 and later · before 2019.1.3
  • autodesk autocad lt2020 and later · before 2020.1.4
  • autodesk autocad lt2021 and later · before 2021.1.1
  • autodesk autocad lt2022 and later · before 2022.0.1

Same product

autodesk: all records

Other highest-scoring records for the same primary product.

  • CVE-2021-40159An Information Disclosure vulnerability for JT files in Autodesk Inventor 2022, 2021, 2020, 2019 in conjunction with other vulnerabilities…
    32Monitor
  • CVE-2021-40158A maliciously crafted JT file in Autodesk Inventor 2022, 2021, 2020, 2019 and AutoCAD 2022 may be forced to read beyond allocated…
    32Monitor
  • CVE-2021-27042A maliciously crafted DWG file can be used to write beyond the allocated buffer while parsing DWG files.
    32Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2019-7361Apr 9, 2019 · An attacker may convince a victim to open a malicious action micro (.actm) file that has serialized data, which may trigger a code…
    31Monitor
  • ← EarlierCVE-2019-7364Aug 23, 2019 · DLL preloading vulnerability in versions 2017, 2018, 2019, and 2020 of Autodesk Advanced Steel, Civil 3D, AutoCAD, AutoCAD LT, AutoCAD…
    32Monitor
  • Later →CVE-2021-27041Jun 25, 2021 · A maliciously crafted DWG file can be used to write beyond the allocated buffer while parsing DWG files.
    32Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

Bug bounty scope

The product’s vendor appears in a public program. Matched by name; verify the scope text in the program.

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

Not on record for this CVE: EPSS history · patch commit or PR link · researcher credit · variant or chain candidate.

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • No account or password is required.
  • A user must open a link or visit a page.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
low · data can be read
Integrity
none
Availability
none
Attack vector
Local
Attack complexity
Low
Privileges required
None
User interaction
Required
Scope
Unchanged
Confidentiality impact
Low
Integrity impact
None
Availability impact
None

Weakness class (CWE)

CWE-125 · Out-of-bounds Read

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

References

Show all references (4 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records