Is CVE-2021-30065 in the CISA KEV catalog?

No. CVE-2021-30065 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-30065?

CVE-2021-30065 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2021-30065?

CVE-2021-30065 has an EPSS score of 0.85% (54th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-30065?

Upgrade tcsefea23f3f22 firmware to 03.23 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2021-30065

HIGH

7.5

CVSS v3

NVD

Description

On Schneider Electric ConneXium Tofino Firewall TCSEFEA23F3F22 before 03.23, TCSEFEA23F3F20/21, and Belden Tofino Xenon Security Appliance, crafted ModBus packets can bypass the ModBus enforcer. NOTE: this issue exists because of an incomplete fix of CVE-2017-11401.

How to fix

Remediation Available

tcsefea23f3f22 firmwareNVD

Affected:< 03.23Fixed in:03.23CVE-2021-30065derived from NVD

tofino xenon security appliance firmwareNVD

Affected:< 03.2.03Fixed in:03.2.03CVE-2021-30065derived 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 VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityHigh

AvailabilityNone

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

Exploit Intelligence

0.85%probability of exploitation in 30 days

54thpercentile

Moderate risk: more likely to be exploited than 54% of all known CVEs.

References

Vendor 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.