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CVE-2020-26990

27
FAUCET Score

CVE-2020-26990 is a critical type confusion vulnerability affecting Siemens JT2Go (all versions < V13.1.0.1) and Teamcenter Visualization (all versions < V13.1.0.1). The vulnerability stems from improper validation of user-supplied data when parsing ASM files, allowing a crafted file to trigger a type confusion condition. This flaw carries a high CVSS score of 8.8, indicating a network-based attack with low complexity, requiring user interaction, and potentially leading to complete compromise of confidentiality, integrity, and availability. While there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB) is currently unavailable. The vulnerability has garnered some community discussion and media coverage, suggesting awareness within the cybersecurity community.

Impacted Technologies

VendorProductVersion(s)CPE
< 13.1.0.1CPE matchmatch criteria
cpe:2.3:a:siemens:jt2go:*:*:*:*:*:*:*:*
< 13.1.0.1CPE matchmatch criteria
cpe:2.3:a:siemens:teamcenter_visualization:*:*:*:*:*:*:*:*

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
3.90%
Probability of exploitation in next 30 days
EPSS Percentile
89.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0390 is in the 88th percentile among its peer group of 14,855 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

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

cert-portal.siemens.com / productcert/pdf/ssa-622830.pdf
Vendor Advisory
cert-portal.siemens.com / productcert/pdf/ssa-663999.pdf
PatchVendor Advisory
zerodayinitiative.com / advisories/ZDI-21-055
Third Party AdvisoryVDB Entry