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CVE-2021-34327

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-07-13 · updated 2026-06-17
• Weakness: CWE-122

Description

A vulnerability has been identified in JT2Go (All versions < V13.2), Solid Edge SE2021 (All Versions < SE2021MP5), Teamcenter Visualization (All versions < V13.2). The plmxmlAdapterSE70.dll library in affected applications lacks proper validation of user-supplied data when parsing ASM files. This could result in an out of bounds write past the fixed-length heap-based buffer. An attacker could leverage this vulnerability to execute code in the context of the current process. (ZDI-CAN-13423)

Affected products

• Siemens JT2Go: before 13.2.0 — fixed in 13.2.0
• Siemens Solid Edge SE2021: before se2021; se2021, se2021-maintenance_pack1, se2021-maintenance_pack2, se2021-maintenance_pack3, se2021-maintenance_pack4 — fixed in se2021
• Siemens Teamcenter Visualization: before 13.2.0 — fixed in 13.2.0

How to fix

Upgrade to a fixed version: Siemens JT2Go 13.2.0; Siemens Solid Edge SE2021 se2021; Siemens Teamcenter Visualization 13.2.0. Check the vendor advisory for mitigations.

References

• https://cert-portal.siemens.com/productcert/pdf/ssa-173615.pdf
• https://cert-portal.siemens.com/productcert/pdf/ssa-483182.pdf
• https://www.zerodayinitiative.com/advisories/ZDI-21-865/
• https://cert-portal.siemens.com/productcert/pdf/ssa-173615.pdf
• https://cert-portal.siemens.com/productcert/pdf/ssa-483182.pdf
• https://www.zerodayinitiative.com/advisories/ZDI-21-865/

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