CVE-2018-12086

mediumpriority · track · 44EPSS 0.118 · 96 %ileexploit · PoCEURUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

1 exploit · PoC

Likely / severe?

11.8% (96th) EPSS

CVSS 5 · medium

Is it mine?

15 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · nvd

EPSS · scored 2026-10-27

Buffer overflow in OPC UA applications allows remote attackers to trigger a stack overflow with carefully structured requests.

cvss

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

7.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5–7.5

v2.05mediumAV:N/AC:L/Au:N/C:N/I:N/A:Pprimary · NVD / NIST USexploitability 10 · impact 2.9

v3.07.5highCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 3.6

v3.07.5highCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · OSV

v3.07.1highCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:Psecondary · CVSS-BT (t0sche)

v3.17.5highAV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · FSTEC (BDU) RU

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-787USprimaryCWE-119USCWE-787US

exploits (1)

Public proof-of-concept and weaponised exploit code.

kevinherron/stack-overflow-pocPoC for CVE-2018-12086 affecting various OPC UA stacksPoC · poc_in_github

affected products (15)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
OPC Foundation OPC UA≤ 1.03.343fstec_bduRU
OPC Foundation OPC UA≤ 1.03.342fstec_bduRU
OPC Foundation OPC UA≤ 1.03.340fstec_bduRU
OPC Foundation OPC UA≤ 1.03.352.12fstec_bduRU
Wireshark team Wireshark2.4.0 → 2.4.9fstec_bduRU
Wireshark team Wireshark2.6.0 → 2.6.3fstec_bduRU
Сообщество свободного программного обеспечения Debian GNU/Linux≤ 9fstec_bduRU
Сообщество свободного программного обеспечения Debian GNU/Linux≤ 8fstec_bduRU
debian debian linux= 9.0nvdUScpe:2.3:o:debian:debian_linux:*:*:*:*:*:*:*:*
opcfoundation unified architecture .net-standard≤ 1.03.352.12nvdUScpe:2.3:a:opcfoundation:unified_architecture_.net-standard:*:*:*:*:*:*:*:*
opcfoundation unified architecture ansic≤ 1.03.340nvdUScpe:2.3:a:opcfoundation:unified_architecture_ansic:*:*:*:*:*:*:*:*
opcfoundation unified architecture-.net-legacy≤ 1.03.342nvdUScpe:2.3:a:opcfoundation:unified_architecture-.net-legacy:*:*:*:*:*:*:*:*
opcfoundation unified architecture-java≤ 1.03.343nvdUScpe:2.3:a:opcfoundation:unified_architecture-java:*:*:*:*:*:*:*:*
NuGet OPCFoundation.NetStandard.Opc.Ua< 1.4.353.15osvUSpkg:nuget/OPCFoundation.NetStandard.Opc.Ua

advisories (1)

Vendor and ecosystem advisories describing this.

GHSA-782p-53wq-cxmjHigh severity vulnerability that affects OPCFoundation.NetStandard.Opc.Ua2018-10-16ghsa · osvUS
Buffer overflow in OPC UA applications allows remote attackers to trigger a stack overflow with carefully structured requests.

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu nvd osv NVD CVE.org MITRE

published 2018-09-14modified 2026-06-17

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+16123 more

references (18)

External citations — patches, advisories, analysis.

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