Is CVE-2021-22639 in the CISA KEV catalog?

No. CVE-2021-22639 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-22639?

CVE-2021-22639 has a CVSS v3 base score of 7.8 (HIGH).

What is the EPSS score for CVE-2021-22639?

CVE-2021-22639 has an EPSS score of 1.86% (77th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-22639?

Upgrade v-server to 4.0.10.0 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2021-22639

HIGHEPSS 77th pctl

7.8

CVSS v3

NVD

Description

An uninitialized pointer issue has been identified in the way the application processes project files, allowing an attacker to craft a special project file that may allow arbitrary code execution on the Tellus Lite V-Simulator and V-Server Lite (versions prior to 4.0.10.0).

CWE-824

How to fix

Remediation Available

v-serverNVD

Affected:< 4.0.10.0Fixed in:4.0.10.0CVE-2021-22639derived from NVD

v-simulatorNVD

Affected:< 4.0.10.0Fixed in:4.0.10.0CVE-2021-22639derived 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

1.86%probability of exploitation in 30 days

77thpercentile

Elevated risk: more likely to be exploited than 77% of all known CVEs.

References

Third-Party Advisory2

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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.