CVE-2020-15158

highpriority · track · 40EPSS 0.020 · 81 %ileEUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

2.04% (81st) EPSS

CVSS 7.5 · high

Is it mine?

2 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-28

In libIEC61850 before version 1.4.3, when a message with COTP message length field with value < 4 is received an integer underflow will happen leading to heap buffer overflow. This can cause an application crash or on some platforms even the execution of remote code. If your application is used in open networks or there are untrusted nodes in the network it is highly recommend to apply the patch. This was patched with commit 033ab5b. Users of version 1.4.x should upgrade to version 1.4.3 when available. As a workaround changes of commit 033ab5b can be applied to older versions.

cvss

Technical severity, 0–10. One row per scoring source.

9.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 7.5–9.8

v2.07.5highAV:N/AC:L/Au:N/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 10 · impact 6.4

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 5.9

v3.17.7highCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:Hsecondary · ENISA EU

v3.17.7highCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:Hsecondary · security-advisories@github.comexploitability 1.8 · impact 5.3

v3.19criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-191USprimaryCWE-119USCWE-122US

affected products (2)

Products and version ranges known to be affected.

mz-automation libiec61850≤ < 1.4.3enisa_euvdEU
mz-automation libiec618501.4.0 → 1.4.3nvdUScpe:2.3:a:mz-automation:libiec61850:*:*:*:*:*:*:*:*

also known as (2)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd NVD CVE.org MITRE

published 2020-08-26modified 2026-06-17

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+717 more

references (10)

External citations — patches, advisories, analysis.

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