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CVE-2023-5222

85
FAUCET Score

CVE-2023-5222 is a critical vulnerability affecting Viessmann Vitogate 300 devices up to version 2.1.3.0. It stems from the use of a hard-coded password within the isValidUser function of the /cgi-bin/vitogate.cgi file in the Web Management Interface. This flaw carries a CVSS score of 9.8 (Critical), indicating it can be exploited remotely with low complexity, leading to complete compromise of confidentiality, integrity, and availability. Public exploit code, including a Metasploit module and Nuclei templates, is available, and an ExploitDB entry details a Remote Code Execution (RCE) exploit. Despite the public disclosure and exploit availability, there is currently no evidence of widespread active exploitation or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.1.3.0CPE matchmatch criteria
cpe:2.3:o:viessmann:vitogate_300_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.3MEDIUM

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

Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
LOW
Exploitability Score
2.8
Impact Score
3.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
74.52%
Probability of exploitation in next 30 days
EPSS Percentile
99.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
Nuclei: CVE-2023-5222 · Jul 30, 2024
ExploitDB: EDB-51887 · Mar 14, 2024
This CVE's current EPSS score of 0.7452 is in the 98th percentile among its peer group of 36,835 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

github.com / Push3AX/vul/blob/main/viessmann/Vitogate300_HardcodedPassword.md
ExploitThird Party Advisory
vuldb.com
Permissions RequiredThird Party AdvisoryVDB Entry
vuldb.com
Permissions RequiredThird Party AdvisoryVDB Entry