No exploitation reported

CVE-2021-27494

No exploitation reported by the sources we read.

Published2021-05-27
WeaknessCWE-121

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

Datakit Software libraries CatiaV5_3dRead, CatiaV6_3dRead, Step3dRead, Ug3dReadPsr, Jt3dReadPsr modules in KeyShot Versions v10.1 and prior lack proper validation of user-supplied data when parsing STP files. This could result in a stack-based buffer overflow. An attacker could leverage this vulnerability to execute code in the context of the current process.

Timeline

dates in UTC

2021-05-2716:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2021-27494?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2021-27494?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Datakit crosscadware

Branch	Affected	Fixed in	Source
2021.1	≤ 2021.1	no fix published	NVD

Luxion keyshot

Branch	Affected	Fixed in	Source
10.1	≤ 10.1	no fix published	NVD

Siemens solid edge se2020 firmwareversion to verify

Branch	Affected	Fixed in	Source
—	all versions	no fix published	NVD

1 more product in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Vendor advisories

ICSA-21-145-01 CISA6 known affected
Datakit Libraries bundled in Luxion KeyShot
Ug3dReadPsr: Versions 2021.1 and earlier · Jt3dReadPsr: Versions 2021.1 and earlier · KeyShot: Versions v10.1 and prior · +3 more

Full record on NVD

Fix

Mitigation from the vendor CISA ICSA-21-145-01 · 6 productsDatakit has released CrossCAD/Ware library Version 2021.2 and recommends software vendors upgrade to this version or later. Versions 2021.1 or earlier are still affected by the vulnerabilities.
Mitigation from the vendor CISA ICSA-21-145-01 · 6 productsDatakit recommends that users of these applications should avoid opening untrusted files from unknown sources.
Mitigation from the vendor CISA ICSA-21-145-01 · 6 productsLuxion has released an update to KeyShot (v10.2), as it is bundled with Datakit 2021.2, and recommends users update to the latest version.
Mitigation from the vendor CISA ICSA-21-145-01 · 6 productsLuxion has published security advisory LSA-394129 for the affected products.

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

NVDCVSS 3.17.8read 2026-10-23
NVDCVSS 2.06.8read 2026-10-23
CNAweakness (CWE)CWE-121read 2026-10-23
FIRST EPSSEPSS score2.2 %2026-10-22

Technical details

CVSS v3 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Published: 2021-05-27
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2021-27494?

Is CVE-2021-27494 actively exploited?

Active exploitation of CVE-2021-27494 has not been confirmed. Its EPSS score was 2.2% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-27494?

CVE-2021-27494 has a CVSS v3 base score of 7.8 (HIGH severity), with vector string CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

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