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CVE-2023-5222

Exploitation confirmed. First attested on 2024-09-16 by GCVE · kevintel, GCVE · shadowserver.

  • Published2023-09-27
  • WeaknessCWE-259

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

A vulnerability classified as critical was found in Viessmann Vitogate 300 up to 2.1.3.0. This vulnerability affects the function isValidUser of the file /cgi-bin/vitogate.cgi of the component Web Management Interface. The manipulation leads to use of hard-coded password. The exploit has been disclosed to the public and may be used. The identifier of this vulnerability is VDB-240364. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

Timeline

dates in UTC
  1. 2023-09-2715:19CVE publishedNVD
  2. 2024-03-14Exploit-DB entryExploit-DB
  3. 2024-09-1609:45Listed as exploited by GCVEGCVE
  4. 2024-09-1609:45Exploitation first reportedGCVE

Observed activity

isMalicious corpus · updated 2026-11-03 21:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2023-5222?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2023-5222?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
Viessmann vitogate 300 firmwareversion to verify
BranchAffectedFixed in
2.1≤ 2.1.3.0no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Products declared by the CNA1 product

As VulDB, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

  • Viessmann Vitogate 300
    Affected
    • = 2.1.0no fix stated
    • = 2.1.1no fix stated
    • = 2.1.2no fix stated
    • = 2.1.3no fix stated

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2023-10-24

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Vendor advisories

  • ICSA-24-254-01 CISA1 known affected

    Viessmann Climate Solutions SE Vitogate 300

    Viessmann Climate Solutions SE Viessmann Vitogate 300: <=2.1.3.0

Full record on NVD

Fix

  1. Mitigation from the vendor CISA ICSA-24-254-01 · 1 productViessmann 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)
  2. Mitigation from the vendor CISA ICSA-24-254-01 · 1 productFor more information, please refer to the advisory from Viessmann, which is a Carrier brand/company.

Detection

read 2026-11-02 22:42 UTC
Nuclei template
available
ProjectDiscovery
Exploit-DB
EDB-51887
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub
Metasploit modules
none listed
Metasploit Framework

Sources

  • GCVEexploitation2024-09-16
  • CISA-ADPSSVC decisionpoc2024-07-09
  • OpenCVESSVC decisionpoc—
  • CNACVSS 3.16.3known since 2026-10-23
  • NVDCVSS 3.19.8read 2026-10-23
  • CNACVSS 2.05.8known since 2026-10-23
  • CNAweakness (CWE)CWE-259known since 2026-10-23
  • FIRST EPSSEPSS score80.4 %read 2026-11-02
  • Exploit-DBdetectionread 2026-11-02
  • ProjectDiscoverydetectionread 2026-11-02

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
2023-09-27
Last Modified
2026-06-17
NVD status
Modified

Frequently asked questions

What is CVE-2023-5222?

A vulnerability classified as critical was found in Viessmann Vitogate 300 up to 2.1.3.0. This vulnerability affects the function isValidUser of the file /cgi-bin/vitogate.cgi of the component Web Management Interface. The manipulation leads to use of hard-coded password. The exploit has been disclosed to the public and may be used. The identifier of this vulnerability is VDB-240364. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

Is CVE-2023-5222 actively exploited?

A proof-of-concept exploit exists for CVE-2023-5222, but active exploitation has not been confirmed at this time.

What is the CVSS score for CVE-2023-5222?

CVE-2023-5222 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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