Is CVE-2021-34323 in the CISA KEV catalog?

No. CVE-2021-34323 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-34323?

CVE-2021-34323 has a CVSS v3 base score of 7.8 (HIGH).

What is the EPSS score for CVE-2021-34323?

CVE-2021-34323 has an EPSS score of 1.64% (73th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-34323?

Upgrade jt2go to 13.2.0 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2021-34323

HIGHEPSS 73th pctl

7.8

CVSS v3

NVD

Description

A vulnerability has been identified in JT2Go (All versions < V13.2), Teamcenter Visualization (All versions < V13.2). The Jt981.dll library in affected applications lacks proper validation of user-supplied data when parsing JT files. This could result in an out of bounds write past the end of an allocated structure. An attacker could leverage this vulnerability to execute code in the context of the current process. (ZDI-CAN-13419)

CWE-787Out-of-bounds Write CWE-20Improper Input Validation

How to fix

Remediation Available

jt2goNVD

Affected:< 13.2.0Fixed in:13.2.0CVE-2021-34323derived from NVD

teamcenter visualizationNVD

Affected:< 13.2.0Fixed in:13.2.0CVE-2021-34323derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

1.64%probability of exploitation in 30 days

73rdpercentile

Elevated risk: more likely to be exploited than 73% of all known CVEs.

References

Vendor Advisory1

cert-portal.siemens.com

Third-Party Advisory1

zerodayinitiative.com

Related Vulnerabilities

Other CWE-787 (Out-of-bounds Write) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2025-22457	Critical	9.0	100%	KEV + Ransom	Fix
CVE-2025-0282	Critical	9.0	100%	KEV + Ransom	-
CVE-2015-3113	Critical	9.8	100%	KEV	Fix
CVE-2021-20038	Critical	9.8	100%	KEV + Ransom	-
CVE-2023-4863	High	8.8	100%	KEV	Fix
CVE-2020-16040	Medium	6.5	100%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.