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CVE-2021-30190

30
FAUCET Score

CVE-2021-30190 describes an Improper Access Control vulnerability in CODESYS V2 Web-Server versions prior to 1.1.9.20, impacting products from vendors like CODESYS and WAGO. This critical vulnerability, with a CVSS score of 9.8, allows an unauthenticated attacker to achieve full compromise (confidentiality, integrity, and availability) over a network with low attack complexity. While there is no evidence of active exploitation, nor publicly available exploit code in Metasploit, Nuclei, or ExploitDB, the vulnerability has garnered some community discussion, indicating awareness within the cybersecurity community.

Impacted Technologies

VendorProductVersion(s)CPE
< fw08CPE matchmatch criteria
cpe:2.3:o:wago:750-893_firmware:*:*:*:*:*:*:*:*
< fw08CPE matchmatch criteria
cpe:2.3:o:wago:750-891_firmware:*:*:*:*:*:*:*:*
< fw08CPE matchmatch criteria
cpe:2.3:o:wago:750-890_firmware:*:*:*:*:*:*:*:*
< fw15CPE matchmatch criteria
cpe:2.3:o:wago:750-889_firmware:*:*:*:*:*:*:*:*
< fw15CPE matchmatch criteria
cpe:2.3:o:wago:750-885_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.40%
Probability of exploitation in next 30 days
EPSS Percentile
69.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0140 is in the 56th percentile among its peer group of 36,862 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

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

Remediation

Vendor Patches (6)

capnprotovendor investigatingvia llm_extracted
gcpvendor investigatingvia llm_extracted
hanwhavendor investigatingvia llm_extracted
kongvendor investigatingvia llm_extracted
openwrtvendor investigatingvia llm_extracted
proxmoxvendor investigatingvia llm_extracted

Vendor Advisories (6)

capnprotollm-capnproto-40dccc5717758cf8CRITICAL

Vulnerabilities in CODESYS V2 runtime systems

Jul 20, 2021
openwrtllm-openwrt-df2887aa05ab23b2CRITICAL

Vulnerabilities in CODESYS V2 runtime systems

Jul 20, 2021
gcpllm-gcp-3ee62bc7c70f8b24CRITICAL

Vulnerabilities in CODESYS V2 runtime systems

Jul 20, 2021
kongllm-kong-93595c6ddaf69518CRITICAL

Vulnerabilities in CODESYS V2 runtime systems

Jul 20, 2021
hanwhallm-hanwha-0f90c69122cbe38dCRITICAL

Vulnerabilities in CODESYS V2 runtime systems

Jul 20, 2021
proxmoxllm-proxmox-59229dd29c6931c6CRITICAL

Vulnerabilities in CODESYS V2 runtime systems

Jul 20, 2021

References

customers.codesys.com / index.php
Permissions RequiredVendor Advisory
customers.codesys.com / index.php
Vendor Advisory