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CVE-2021-46155

25
FAUCET Score

CVE-2021-46155 is a stack-based buffer overflow vulnerability affecting Siemens Simcenter Femap versions V2020.2 and V2021.1, specifically when parsing NEU files. This vulnerability carries a high CVSS score of 7.8, indicating a significant risk where an attacker could achieve arbitrary code execution with high impact on confidentiality, integrity, and availability, typically requiring user interaction to open a malicious file. Currently, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
2020.2CPE matchmatch criteria
cpe:2.3:a:siemens:simcenter_femap:2020.2:-:*:*:*:*:*:*
2020.2CPE matchmatch criteria
cpe:2.3:a:siemens:simcenter_femap:2020.2:maintenance_pack1:*:*:*:*:*:*
2020.2CPE matchmatch criteria
cpe:2.3:a:siemens:simcenter_femap:2020.2:maintenance_pack2:*:*:*:*:*:*
2020.2CPE matchmatch criteria
cpe:2.3:a:siemens:simcenter_femap:2020.2:maintenance_pack3:*:*:*:*:*:*
2021.1CPE matchmatch criteria
cpe:2.3:a:siemens:simcenter_femap:2021.1:-:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.77%
Probability of exploitation in next 30 days
EPSS Percentile
75.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0177 is in the 75th percentile among its peer group of 11,621 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

cert-portal.siemens.com / productcert/pdf/ssa-609880.pdf
Vendor Advisory
zerodayinitiative.com / advisories/ZDI-22-305
Third Party AdvisoryVDB Entry
zerodayinitiative.com / advisories/ZDI-22-306
Third Party AdvisoryVDB Entry
zerodayinitiative.com / advisories/ZDI-22-307
Third Party AdvisoryVDB Entry
zerodayinitiative.com / advisories/ZDI-22-308
Third Party AdvisoryVDB Entry