Is CVE-2023-31728 in the CISA KEV catalog?

No. CVE-2023-31728 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2023-31728?

CVE-2023-31728 has a CVSS v3 base score of 7.0 (HIGH).

What is the EPSS score for CVE-2023-31728?

CVE-2023-31728 has an EPSS score of 0.20% (10th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2023-31728?

Upgrade rut240 firmware to 00.07.04.2 or later.

CVE & CISA-KEV Catalog

CVE-2023-31728

HIGH

7.0

CVSS v3

NVD

Description

Teltonika RUT240 devices with firmware before 07.04.2, when bridge mode is used, sometimes make SSH and HTTP services available on the IPv6 WAN interface even though the UI shows that they are only available on the LAN interface.

How to fix

Remediation Available

rut240 firmwareNVD

Affected:< 00.07.04.2Fixed in:00.07.04.2CVE-2023-31728derived 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 ComplexityHigh

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

0.20%probability of exploitation in 30 days

10thpercentile

Low risk: more likely to be exploited than 10% 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 2025-05-30.