CVE-2020-7054
HIGHCVSS 8.8/10EPSS 1.10%
Last modified
CVE-2020-7054 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. MmsValue_decodeMmsData in mms/iso_mms/server/mms_access_result.c in libIEC61850 through 1.4.0 has a heap-based buffer overflow when parsing the MMS_BIT_STRING data type.. EPSS estimates a 1.10% chance of exploitation in the next 30 days.
Description
MmsValue_decodeMmsData in mms/iso_mms/server/mms_access_result.c in libIEC61850 through 1.4.0 has a heap-based buffer overflow when parsing the MMS_BIT_STRING data type.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Mz-Automation | Libiec61850 | <= 1.4.0 |
References
- https://github.com/mz-automation/libiec61850/issues/200Exploit, Third Party Advisory
- https://github.com/mz-automation/libiec61850/issues/200Exploit, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2020-7054?
MmsValue_decodeMmsData in mms/iso_mms/server/mms_access_result.c in libIEC61850 through 1.4.0 has a heap-based buffer overflow when parsing the MMS_BIT_STRING data type.
How severe is CVE-2020-7054?
CVE-2020-7054 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 1.10% probability of exploitation in the next 30 days.
How do I fix CVE-2020-7054?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
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Are you affected by CVE-2020-7054?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST