CVE-2021-41535

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-09-28 · updated 2026-06-17
Weakness: CWE-416

Description

A vulnerability has been identified in NX 1953 Series (All versions < V1973.3700), NX 1980 Series (All versions < V1988), Solid Edge SE2021 (All versions < SE2021MP8). The affected application contains a use-after-free vulnerability while parsing OBJ files. An attacker could leverage this vulnerability to execute code in the context of the current process (ZDI-CAN-13771).

Affected products

Siemens Nx 1957 Firmware: before 1973.3700 — fixed in 1973.3700
Siemens Nx 1961 Firmware: before 1973.3700 — fixed in 1973.3700
Siemens Nx 1965 Firmware: before 1973.3700 — fixed in 1973.3700
Siemens Nx 1969 Firmware: before 1973.3700 — fixed in 1973.3700
Siemens Nx 1984 Firmware: before 1984 — fixed in 1984
Siemens Nx 1988 Firmware: before 1984 — fixed in 1984
Siemens Solid Edge SE2021: before se2021; se2021, se2021-maintenance_pack1, se2021-maintenance_pack2, se2021-maintenance_pack3, se2021-maintenance_pack4, se2021-maintenance_pack5 (+2) — fixed in se2021

How to fix

Upgrade to a fixed version: Siemens Nx 1957 Firmware 1973.3700; Siemens Nx 1961 Firmware 1973.3700; Siemens Nx 1965 Firmware 1973.3700; Siemens Nx 1969 Firmware 1973.3700; Siemens Nx 1984 Firmware 1984; Siemens Nx 1988 Firmware 1984; Siemens Solid Edge SE2021 se2021. Check the vendor advisory for mitigations.

References

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