CVE-2026-68906

See a problem?
Please try reporting it to the source first.

Source

https://cve.org/CVERecord?id=CVE-2026-68906

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-68906.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-68906

Aliases

GHSA-f7xm-q62q-22cx

Published

2026-10-16T15:49:32Z

Modified

2026-10-17T02:48:31Z

Severity

8.7 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CVSS Calculator

Summary

libIEC61850: Infinite loop and out-of-bounds read in ACSE parseUserInformation when parsing a malformed AARE PDU

Details

libIEC61850 is an open-source implementation of IEC 61850 client and server protocols including MMS, GOOSE, Sampled Values, and R-Session. Prior to 1.6.2, parseUserInformation in src/mms/iso_acse/acse.c checks len for zero before validating the negative bufPos returned by BerDecoder_decodeLength for a truncated long-form length. The continue path therefore swallows the error, reads buffer[-1], resets parsing to the beginning, and repeats the same malformed state. An unauthenticated remote peer can send a malformed AARE PDU during association to cause an infinite CPU loop under a normal allocator or a one-byte out-of-bounds read and process abort when the preceding byte is inaccessible. This issue is fixed in version 1.6.2.

Database specific

{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-125",
        "CWE-835"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68906.json"
}

References

Affected packages

Git / github.com/mz-automation/libiec61850

Affected ranges

Type

GIT

Repo

https://github.com/mz-automation/libiec61850

Events

Introduced

Fixed

f0f797bf955da763353f7081c892a1ff6b55e5a1

Database specific

Show details

{
    "extracted_events":  [
        {
            "introduced":  "0"
        },
        {
            "fixed":  "1.6.2"
        }
    ],
    "source":  "AFFECTED_FIELD"
}

Affected versions

v1.*

v1.0.0

v1.0.1

v1.1

v1.2.0

v1.2.1

v1.2.2

v1.3.0

v1.4.0

v1.4.1

v1.6.0

v1.6.1

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-68906.json"