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CVE-2020-8809

26
FAUCET Score

CVE-2020-8809 affects Gurux GXDLMS Director versions prior to 8.5.1905.1301, stemming from its use of unencrypted HTTP for downloading add-in and OBIS code updates. This allows a man-in-the-middle attacker to intercept and modify update files, potentially leading to remote code execution. The vulnerability carries a high CVSS score of 8.1, indicating significant impact with high confidentiality, integrity, and availability concerns, though it requires high attack complexity. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 8.5.1905.1301CPE matchmatch criteria
cpe:2.3:a:gurux:device_language_message_specification_director:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.1HIGH

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.2
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.03%
Probability of exploitation in next 30 days
EPSS Percentile
60.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0103 is in the 24th percentile among its peer group of 8,914 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

github.com / seqred-s-a/gxdlmsdirector-cve
ExploitThird Party Advisory
seqred.pl / en/cve-gurux-gxdlms-director
ExploitThird Party Advisory