CVE-2018-3991

highpriority · attend · 51EPSS 0.343 · 98 %ileDEEURUUS

grimoire priorityP1 · Urgent

Exploitable?

—

no known exploitation

Likely / severe?

34.3% (98th) EPSS

CVSS 7.5 · high

Is it mine?

32 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · cisa_csaf_ot

EPSS · scored 2026-10-27

An exploitable heap overflow vulnerability exists in the WkbProgramLow function of WibuKey Network server management, version 6.40.2402.500. A specially crafted TCP packet can cause a heap overflow, potentially leading to remote code execution. An attacker can send a malformed TCP packet to trigger this vulnerability.

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

Fixedphoenix_contact_psirt
WibuKey Runtime Version 6.50 will be integrated in the next version MEVIEW3 (3.14.25 & 3.15.18).
FixedCOPA-DATA straton workbenchcisa_csaf_ot
CERT@VDE has also published an advisory for the Phoenix Contact MEVIEW3 at the following link:
FixedCOPA-DATA zenon productscisa_csaf_ot
CERT@VDE has also published an advisory for the Phoenix Contact MEVIEW3 at the following link:
FixedPhoenix Contact MEVIEW3cisa_csaf_ot
CERT@VDE has also published an advisory for the Phoenix Contact MEVIEW3 at the following link:
FixedSiemens SICAM 230cisa_csaf_ot
CERT@VDE has also published an advisory for the Phoenix Contact MEVIEW3 at the following link:
FixedSiemens SIMATIC WinCC OA 3.14cisa_csaf_ot
CERT@VDE has also published an advisory for the Phoenix Contact MEVIEW3 at the following link:
FixedSiemens SIMATIC WinCC OA 3.15cisa_csaf_ot
CERT@VDE has also published an advisory for the Phoenix Contact MEVIEW3 at the following link:
FixedSiemens SIMATIC WinCC OA 3.16cisa_csaf_ot
CERT@VDE has also published an advisory for the Phoenix Contact MEVIEW3 at the following link:
FixedSiemens SISHIP EMCS IMAC IPMScisa_csaf_ot
CERT@VDE has also published an advisory for the Phoenix Contact MEVIEW3 at the following link:
FixedSprecher Automation SPRECON-V460 productscisa_csaf_ot
CERT@VDE has also published an advisory for the Phoenix Contact MEVIEW3 at the following link:
Mitigationphoenix_contact_psirt
1. Dongle based licensing: Update WibuKey Runtime to version 6.50. See: [WIBU-SYSTEMS Download Page](https://www.wibu.com/support/user/downloads-user-software.html) 2. Hardwarecode-based licensing: Removing the WibuKey application. For further information please refer to: [WIBU-SYSTEMS Support Documentation](https://www.wibu.com/de/support/anwendersoftware/anwendersoftware/file/download/5638.html)

cvss

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

10.0

010

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

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

v3.09.8criticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 5.9

v3.010criticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:Hsecondary · ENISA EU

v3.010criticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:Hsecondary · talos-cna@cisco.com USexploitability 3.9 · impact 6

v3.09.8criticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · Phoenix Contact PSIRT DE

v3.09criticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

v3.010criticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:Hsecondary · CISA US

v3.110criticalAV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-787USprimaryCWE-119USCWE-119USCWE-122US

affected products (32)

Products and version ranges known to be affected.

3.14: All versions prior to vP025all versionscisa_csaf_otUS
3.15: All versions prior to vP018all versionscisa_csaf_otUS
3.16: All versions prior to vP007all versionscisa_csaf_otUS
COPA-DATA straton workbench: All Versions 9.2 and priorall versionscisa_csaf_otUS
COPA-DATA zenon products: All Versions 7.20 and prior (7.50 and 7.60 may also be affected if WibuKey was installed manually)all versionscisa_csaf_otUS
Phoenix Contact MEVIEW3: All versions prior to 3.14.25 and 3.15.18all versionscisa_csaf_otUS
Siemens SICAM 230: All Versions 7.20 and priorall versionscisa_csaf_otUS
Siemens SISHIP EMCS IMAC IPMS: All versionsall versionscisa_csaf_otUS
Sprecher Automation SPRECON-V460 products: All Versions 7.20 and prior (7.50 and 7.60 may also be affected if WibuKey was installed manually)all versionscisa_csaf_otUS
WIBU-SYSTEMS AG COPA-DATA straton workbench≤ 9.2cisa_csaf_otUS
WIBU-SYSTEMS AG COPA-DATA zenon products≤ 7.20 (7.50 and 7.60 may also be affected if WibuKey was installed manually)cisa_csaf_otUS
WIBU-SYSTEMS AG Phoenix Contact MEVIEW3≤ 3.14.25 | 3.15.18cisa_csaf_otUS
WIBU-SYSTEMS AG Siemens SICAM 230≤ 7.20cisa_csaf_otUS
WIBU-SYSTEMS AG Siemens SIMATIC WinCC OA 3.14< P025cisa_csaf_otUS
WIBU-SYSTEMS AG Siemens SIMATIC WinCC OA 3.15< P018cisa_csaf_otUS
WIBU-SYSTEMS AG Siemens SIMATIC WinCC OA 3.16< P007cisa_csaf_otUS
WIBU-SYSTEMS AG Siemens SISHIP EMCS IMAC IPMSall versionscisa_csaf_otUS
WIBU-SYSTEMS AG Sprecher Automation SPRECON-V460 products≤ 7.20 (7.50 and 7.60 may also be affected if WibuKey was installed manually)cisa_csaf_otUS
n/a n/a≤ n/aenisa_euvdEU
Siemens AG SICAM 230≤ 7.20fstec_bduRU

showing 20 of 32

advisories (2)

Vendor and ecosystem advisories describing this.

VDE-2019-003PHOENIX CONTACT: Multiple Vulnerabilities in MEVIEW32019-03-05csaf · phoenix_contact_psirtDE
Multiple vulnerabilities for MEVIEW3 have been identified in PHOENIX CONTACT MEVIEW3, versions below 3.14.25 and 3.15.18
ICSA-19-043-03WIBU SYSTEMS AG WibuKey Digital Rights Management (Update D)2019-02-12icsa · cisa_csaf_otUS
Successful exploitation of these vulnerabilities may allow information disclosure, privilege escalation, or remote code execution.

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cisa_csaf_ot phoenix_contact_psirt NVD CVE.org MITRE

published 2019-02-05modified 2026-06-17

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+16132 more

references (24)

External citations — patches, advisories, analysis.

scry

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