CVE-2021-31343

Name: CVE-2021-31343
Creator: NVD / NIST
Published: 2021-06-08T20:15:08.987+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 2.50%

Last modified Jun 17, 2026

CVE-2021-31343 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. The jutil.dll library in all versions of Solid Edge SE2020 before 2020MP14 and all versions of Solid Edge SE2021 before SE2021MP5 lack proper validation of user-supplied data when parsing DFT files. This could result in an out-of-bounds write past the end of an allocation structure. EPSS estimates a 2.50% chance of exploitation in the next 30 days.

Description

The jutil.dll library in all versions of Solid Edge SE2020 before 2020MP14 and all versions of Solid Edge SE2021 before SE2021MP5 lack proper validation of user-supplied data when parsing DFT files. This could result in an out-of-bounds write past the end of an allocation structure. An attacker could leverage this vulnerability to execute code in the context of the current process.

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

2.50%

82.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-787

Affected Software

Vendor	Product	Versions
Siemens	Solid Edge Se2020 Firmware	< 2020mp14
Siemens	Solid Edge Se2021 Firmware	< se2021mp5

References

https://us-cert.cisa.gov/ics/advisories/icsa-21-159-09Third Party Advisory, US Government Resource
https://www.zerodayinitiative.com/advisories/ZDI-21-999/Third Party Advisory, VDB Entry
https://us-cert.cisa.gov/ics/advisories/icsa-21-159-09Third Party Advisory, US Government Resource
https://www.zerodayinitiative.com/advisories/ZDI-21-999/Third Party Advisory, VDB Entry

Timeline

Published: Jun 8, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-31343?

How severe is CVE-2021-31343?

CVE-2021-31343 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 2.50% probability of exploitation in the next 30 days.

How do I fix CVE-2021-31343?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-31343?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST