CVE-2021-27396

moderate-risk

Published 2021-05-12

A vulnerability has been identified in Tecnomatix Plant Simulation (All versions < V16.0.5). The PlantSimCore.dll library lacks proper validation of user-supplied data when parsing SPP files. This could result in a stack based buffer overflow, a different vulnerability than CVE-2021-27398. An attacker could leverage this vulnerability to execute code in the context of the current process. (ZDI-CAN-13279)

Do I need to act?

0.94% chance of exploitation

EPSS score — low exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 7.8/10 High

LOCAL / LOW complexity

Affected Products (1)

Tecnomatix Plant Simulation

Affected Vendors

Siemens

References (4)

Vendor Advisory https://cert-portal.siemens.com/productcert/pdf/ssa-983548.pdf

Third Party Advisory https://www.zerodayinitiative.com/advisories/ZDI-21-568/

Vendor Advisory https://cert-portal.siemens.com/productcert/pdf/ssa-983548.pdf

Third Party Advisory https://www.zerodayinitiative.com/advisories/ZDI-21-568/

/ 100

moderate-risk

Severity 24/34 · High

Exploitability 3/34 · Minimal

Exposure 5/34 · Minimal