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Fencer Vulns
medium 4.3

CVE-2023-5702 json

Viessmann Vitogate 300 direct request

published 2023-10-23 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-57989

cvss
4.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
18.7%
EPSS 18.7% chance of exploitation in 30 days, percentile 97%
public exploits
1
Exploit-DB

Summary

A vulnerability was found in Viessmann Vitogate 300 up to 2.1.3.0 and classified as problematic. Affected by this issue is some unknown functionality of the file /cgi-bin/. The manipulation leads to direct request. The exploit has been disclosed to the public and may be used. The identifier of this vulnerability is VDB-243140. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-24-254-01 updated cvss 6.5

Viessmann Climate Solutions SE Vitogate 300

  • Viessmann Climate Solutions SE Viessmann Vitogate 300 <=2.1.3.0
    affected: mitigation “Viessmann Climate Solutions SE recommends customers update to version 3.0.0.0 to fix these vulnerabilities. The software is available to download at their (website)” connectivity.viessmann.com

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

Timeline

  1. Published
  2. First public exploit (EDB-51887)

Exploit prediction

18.70% chance of exploitation in the next 30 days, higher than 97% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-51887 Viessmann Vitogate 300 2.1.3.0 - Remote Code Execution (RCE) remote, 2024-03-14
  • github.com https://github.com/GTA12138/vul/blob/main/Viessmann/Vitogate300_Document_Unauthorized_Access.md referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 4.3 CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CNA 3.0 4.3 CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CNA 2.0 3.3 AV:A/AC:L/Au:N/C:P/I:N/A:N
NVD 3.1 6.5 CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected products

  • Viessmann Vitogate 300

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.