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Vulnerability record · CVE-2018-18834 · published 30 October 2018

CVE-2018-18834: Mz-automation libiec61850 out-of-bounds write vulnerability

Mz Automation · Libiec61850

An issue has been found in libIEC61850 v1.3. It is a heap-based buffer overflow in BerEncoder_encodeOctetString in mms/asn1/ber_encoder.c.

9.8 CVSS 3.0 Critical EPSS 2.1% · top 18.9% CWE-787 · Out-of-bounds write
9.8CVSS 3.0 base score, v2 7.5
2.1%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References, 4 tagged exploit
17 Jun 2026Last modified by NVD

Description

An issue has been found in libIEC61850 v1.3. It is a heap-based buffer overflow in BerEncoder_encodeOctetString in mms/asn1/ber_encoder.c.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/fouzhe/security/tree/master/libiec61850 ExploitThird Party Advisory
https://github.com/mz-automation/libiec61850/issues/81 ExploitThird Party Advisory
https://github.com/fouzhe/security/tree/master/libiec61850 ExploitThird Party Advisory
https://github.com/mz-automation/libiec61850/issues/81 ExploitThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2024-45970Mz-automation libiec61850 classic buffer overflow vulnerabilityMultiple Buffer overflows in the MMS Client in MZ Automation LibIEC61850 before commit ac925fae8e281ac6defcd630e9dd756264e9c5bc allow a malicious ser…EPSS 0.62%9.8CVE-2024-45971Mz-automation libiec61850 classic buffer overflow vulnerabilityMultiple Buffer overflows in the MMS Client in MZ Automation LibIEC61850 before commit 1f52be9ddeae00e69cd43e4cac3cb4f0c880c4f0 allow a malicious ser…EPSS 0.62%9.8CVE-2022-2970Mz-automation libiec61850 stack-based buffer overflow vulnerabilityMZ Automation's libIEC61850 (versions 1.4 and prior; version 1.5 prior to commit a3b04b7bc4872a5a39e5de3fdc5fbde52c09e10e) does not sanitize input be…EPSS 1.5%9.8CVE-2022-2972Mz-automation libiec61850 stack-based buffer overflow vulnerabilityMZ Automation's libIEC61850 (versions 1.4 and prior; version 1.5 prior to commit a3b04b7bc4872a5a39e5de3fdc5fbde52c09e10e) is vulnerable to a stack-b…EPSS 1.6%9.8CVE-2020-15158Mz-automation libiec61850 memory buffer overflow vulnerabilityIn libIEC61850 before version 1.4.3, when a message with COTP message length field with value < 4 is received an integer underflow will happen leadin…EPSS 2.0%9.8CVE-2018-19185Mz-automation libiec61850 out-of-bounds write vulnerabilityAn issue has been found in libIEC61850 v1.3. It is a heap-based buffer overflow in BerEncoder_encodeOctetString in mms/asn1/ber_encoder.c. This is ex…EPSS 2.1%9.8CVE-2018-18957Mz-automation libiec61850 out-of-bounds write vulnerabilityAn issue has been found in libIEC61850 v1.3. It is a stack-based buffer overflow in prepareGooseBuffer in goose/goose_publisher.c.EPSS 12%8.8CVE-2022-3976Mz-automation libiec61850 path traversal vulnerabilityA vulnerability has been found in MZ Automation libiec61850 up to 1.4 and classified as critical. This vulnerability affects unknown code of the file…EPSS 0.49%

Source: NIST National Vulnerability Database (record CVE-2018-18834), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.