CVE-2021-27399

mediumpriority · track · 31EPSS 0.013 · 71 %ileDEEUUS
grimoire priorityP3 · Track
Exploitable?
—
no known exploitation
Likely / severe?
1.34% (71st) EPSS
CVSS 6.8 · medium
Is it mine?
11 products
Check your exposure
Who says so?
5 sources
cnnvd · enisa_euvd · cisa_csaf_ot · nvd

EPSS · scored 2026-10-28

A vulnerability has been identified in Simcenter Femap 2020.2 (All versions < V2020.2.MP3), Simcenter Femap 2021.1 (All versions < V2021.1.MP3). The femap.exe application lacks proper validation of user-supplied data when parsing FEMAP files. This could result in an out of bounds write past the end of an allocated structure, a different vulnerability than CVE-2021-27387. An attacker could leverage this vulnerability to execute code in the context of the current process. (ZDI-CAN-12820)

01

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

  • FixedSimcenter Femap 2020.2siemens_psirt

    Update to V2020.2.MP3 or later version

  • FixedSimcenter Femap 2021.1siemens_psirt

    Update to V2021.1.MP3 or later version

  • FixedSimcenter Femap 2020.2cisa_csaf_ot

    Update to V2020.2.MP3 or later version

  • FixedSimcenter Femap 2021.1cisa_csaf_ot

    Update to V2021.1.MP3 or later version

  • MitigationSimcenter Femap 2020.2siemens_psirt

    Do not open untrusted modfem files from unknown sources

  • MitigationSimcenter Femap 2021.1siemens_psirt

    Do not open untrusted modfem files from unknown sources

  • MitigationSimcenter Femap 2020.2cisa_csaf_ot

    Do not open untrusted modfem files from unknown sources

  • MitigationSimcenter Femap 2021.1cisa_csaf_ot

    Do not open untrusted modfem files from unknown sources

02

cvss

Technical severity, 0–10. One row per scoring source.

7.8
010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.8–7.8

v2.06.8mediumAV:N/AC:M/Au:N/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 8.6 · impact 6.4
v3.17.8highCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 1.8 · impact 5.9
v3.17.8highCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:Csecondary · CISA US
v3.17.8highCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:Csecondary · Siemens ProductCERT DE
v3.17.1highCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)
03

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-787USCWE-787USCWE-787US
04

affected products (11)

Products and version ranges known to be affected.

05

advisories (2)

Vendor and ecosystem advisories describing this.

  • SSA-133038SSA-133038: Multiple Modfem File Parsing Vulnerabilities in Simcenter Femap2021-06-08csaf · siemens_psirtDE

    Siemens Simcenter Femap is affected by two vulnerabilities that could be triggered when the application reads modfem files. If a user is tricked to open a malicious file with the affected application, this could lead to a crash, and potentially also to arbitrary code execution or data extraction on the target host system. Siemens has released updates for Simcenter Femap and recommends to update to the latest version to fix the vulnerabilities. Siemens recommends to avoid opening of untrusted files from unknown sources.

  • ICSA-21-159-12Siemens Simcenter Femap2021-06-08icsa · cisa_csaf_otUS

    Siemens Simcenter Femap is affected by two vulnerabilities that could be triggered when the application reads modfem files. If a user is tricked to open a malicious file with the affected application, this could lead to a crash, and potentially also to arbitrary code execution or data extraction on the target host system. Siemens has released updates for Simcenter Femap and recommends to update to the latest version to fix the vulnerabilities. Siemens recommends to avoid opening of untrusted files from unknown sources.

06

also known as (3)

Other names and identifiers for this entity.

07

sources

Which sources assert this record, and when.

cnnvdenisa_euvdcisa_csaf_otnvdsiemens_psirtNVDCVE.orgMITRE
published 2021-06-08modified 2026-06-17
08

references (8)

External citations — patches, advisories, analysis.

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