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CVE-2022-21159

24
FAUCET Score

CVE-2022-21159 is a denial-of-service vulnerability affecting MZ Automation GmbH's libiec61850 version 1.5.0. An unauthenticated attacker can trigger this vulnerability by sending a specially crafted sequence of malformed IEC 61850 network requests to the parseNormalModeParameters function. This vulnerability is rated as High severity (CVSS 7.5), indicating a low attack complexity and no user interaction required, with the primary impact being a denial of service. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
1.5.0CPE matchmatch criteria
cpe:2.3:a:mz-automation:libiec61850:1.5.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.80%
Probability of exploitation in next 30 days
EPSS Percentile
76.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0180 is in the 59th percentile among its peer group of 51,553 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 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

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

github.com / mz-automation/libiec61850/commit/cfa94cbf10302bedc779703f874ee2e8387a0721
PatchThird Party Advisory
talosintelligence.com / vulnerability_reports/TALOS-2022-1467
ExploitThird Party Advisory
talosintelligence.com / vulnerability_reports/TALOS-2022-1467
ExploitThird Party Advisory