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CVE-2021-31343

27
FAUCET Score

CVE-2021-31343 is a critical out-of-bounds write vulnerability in the jutil.dll library of Siemens Solid Edge SE2020 (before MP14) and SE2021 (before MP5). This flaw, stemming from insufficient validation of user-supplied data in DFT files, allows an unauthenticated attacker to execute arbitrary code in the context of the current process. With a CVSS score of 8.8 (High), it presents a significant risk due to its network-based attack vector and high impact on confidentiality, integrity, and availability. Despite its severity, there is currently no evidence of active exploitation, public exploit code, or significant community discussion, and it is not listed in CISA's KEV catalog.

Impacted Technologies

VendorProductVersion(s)CPE
< 2020mp14CPE matchmatch criteria
cpe:2.3:o:siemens:solid_edge_se2020_firmware:*:*:*:*:*:*:*:*
< se2021mp5CPE matchmatch criteria
cpe:2.3:o:siemens:solid_edge_se2021_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.50%
Probability of exploitation in next 30 days
EPSS Percentile
83.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0250 is in the 82nd percentile among its peer group of 14,875 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 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 0.1 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

us-cert.cisa.gov / ics/advisories/icsa-21-159-09
Third Party AdvisoryUS Government Resource
zerodayinitiative.com / advisories/ZDI-21-999
Third Party AdvisoryVDB Entry