HOMEVULNERABILITIESCVE-2022-3976
HIGH

CVE-2022-3976

CWE-22Published: November 13, 2022· Updated: Jun 17, 2026

8.8
CVSS v3.1

Official Description

A vulnerability has been found in MZ Automation libiec61850 up to 1.4 and classified as critical. This vulnerability affects unknown code of the file src/mms/iso_mms/client/mms_client_files.c of the component MMS File Services. The manipulation of the argument filename leads to path traversal. Upgrading to version 1.5 is able to address this issue. The name of the patch is 10622ba36bb3910c151348f1569f039ecdd8786f. It is recommended to upgrade the affected component. The identifier of this vulnerability is VDB-213556.

NVD Source

Technical Analysis

CVE-2022-3976 requires adjacent network access, limiting remote exploitation but still posing risk in shared or local network environments.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorAdjacent
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

mz-automation1 product(s)
libiec61850
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://github.com/mz-automation/libiec61850/commit/10622ba36bb3910c151348f1569f039ecdd8786f
PATCHhttps://github.com/mz-automation/libiec61850/commit/10622ba36bb3910c151348f1569f039ecdd8786f
ADVISORYhttps://github.com/mz-automation/libiec61850
ADVISORYhttps://vuldb.com/?id.213556
ADVISORYhttps://github.com/mz-automation/libiec61850
ADVISORYhttps://vuldb.com/?id.213556

All References (6)

→
https://github.com/mz-automation/libiec61850Third Party Advisory
→
https://github.com/mz-automation/libiec61850/commit/10622ba36bb3910c151348f1569f039ecdd8786fPatch · Third Party Advisory
→
https://vuldb.com/?id.213556Third Party Advisory
→
https://github.com/mz-automation/libiec61850Third Party Advisory
→
https://github.com/mz-automation/libiec61850/commit/10622ba36bb3910c151348f1569f039ecdd8786fPatch · Third Party Advisory
→
https://vuldb.com/?id.213556Third Party Advisory

Quick Facts

CVE IDCVE-2022-3976
CVSS Score8.8 / 10
SeverityHIGH
WeaknessCWE-22
CISA KEVNo
Affected1 vendor(s)
PublishedNov 13, 2022

Related CVEs (CWE-22)

CVE-2026-34909
KEV10.0
CVE-2026-48282
KEV10.0
CVE-2008-1310
10.0
CVE-2011-5127
10.0
CVE-2026-11429
10.0
CVE-2008-4489
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2022-3976 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.
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