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CVE-2021-27494

24
FAUCET Score

CVE-2021-27494 is a stack-based buffer overflow vulnerability affecting Datakit Software libraries within KeyShot versions v10.1 and prior, as well as products from Siemens. It arises from improper validation of user-supplied data when parsing STP files. This vulnerability has a CVSS score of 7.8 (High), indicating that an attacker could achieve high confidentiality, integrity, and availability impact through local access and user interaction. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2021.1CPE matchmatch criteria
cpe:2.3:a:datakit:crosscadware:*:*:*:*:*:*:*:*
<= 10.1CPE matchmatch criteria
cpe:2.3:a:luxion:keyshot:*:*:*:*:*:*:*:*
All Versions ImpactedCPE matchmatch criteria
cpe:2.3:o:siemens:solid_edge_se2020_firmware:*:*:*:*:*:*:*:*
All Versions ImpactedCPE matchmatch criteria
cpe:2.3:o:siemens:solid_edge_se2021_firmware:*:*:*:*:*:*:*:*

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
2.20%
Probability of exploitation in next 30 days
EPSS Percentile
80.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0220 is in the 81st 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-119468.pdf
Third Party Advisory
us-cert.cisa.gov / ics/advisories/icsa-21-145-01
Third Party AdvisoryUS Government Resource
zerodayinitiative.com / advisories/ZDI-21-564
Third Party AdvisoryVDB Entry