Is CVE-2020-8809 in the CISA KEV catalog?

No. CVE-2020-8809 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2020-8809?

CVE-2020-8809 has a CVSS v3 base score of 8.1 (HIGH).

What is the EPSS score for CVE-2020-8809?

CVE-2020-8809 has an EPSS score of 1.03% (59th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2020-8809?

Upgrade device language message specification director to 8.5.1905.1301 or later.

CVE & CISA-KEV Catalog

CVE-2020-8809

HIGH

8.1

CVSS v3

NVD

Description

Gurux GXDLMS Director prior to 8.5.1905.1301 downloads updates to add-ins and OBIS code over an unencrypted HTTP connection. A man-in-the-middle attacker can prompt the user to download updates by modifying the contents of gurux.fi/obis/files.xml and gurux.fi/updates/updates.xml. Then, the attacker can modify the contents of downloaded files. In the case of add-ins (if the user is using those), this will lead to code execution. In case of OBIS codes (which the user is always using as they are needed to communicate with the energy meters), this can lead to code execution when combined with CVE-2020-8810.

CWE-494

How to fix

Remediation Available

device language message specification directorNVD

Affected:< 8.5.1905.1301Fixed in:8.5.1905.1301CVE-2020-8809derived 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 ComplexityHigh

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

1.03%probability of exploitation in 30 days

59thpercentile

Moderate risk: more likely to be exploited than 59% of all known CVEs.

References

Exploit2

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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.