CVE-2018-11456

mediumpriority · track · 23EPSS 0.013 · 69 %ileEUUS
grimoire priorityP3 · Track
Exploitable?
—
no known exploitation
Likely / severe?
1.26% (69th) EPSS
CVSS 5 · medium
Is it mine?
6 products
Check your exposure
Who says so?
4 sources
cnnvd · enisa_euvd · cisa_csaf_ot · nvd

EPSS · scored 2026-10-27

A vulnerability has been identified in Automation License Manager 5 (All versions < 5.3.4.4). An attacker with network access to the device could send specially crafted network packets to determine whether or not a network port on another remote system is accessible or not. This allows the attacker to do basic network scanning using the victims machine. Successful exploitation requires a network connection to the affected device. The attacker does not need privileges, no user interaction is required. The impact is limited to determining whether or not a port on a target system is accessible by the affected device.

01

remediations

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

A vendor fix is available.

  • FixedAutomation License Manager 5cisa_csaf_ot

    Update to V5.3.4.4 - Download: https://support.industry.siemens.com/cs/ww/en/view/114358

    https://support.industry.siemens.com/cs/ww/en/view/114358
  • MitigationAutomation License Manager 5cisa_csaf_ot

    Siemens has identified the following specific workarounds and mitigations thatcustomers can apply to reduce the risk: Restrict network access as far as possible

  • MitigationAutomation License Manager 6cisa_csaf_ot

    Siemens has identified the following specific workarounds and mitigations thatcustomers can apply to reduce the risk: Restrict network access as far as possible

02

cvss

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

5.8
010

base score 0–10 · higher = more severe · hover a vector to decode

v2.05mediumAV:N/AC:L/Au:N/C:P/I:N/A:Nprimary · NVD / NIST USexploitability 10 · impact 2.9
v3.05.8mediumCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:Nprimary · NVD / NIST USexploitability 3.9 · impact 1.4
v3.05.3mediumCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:O/RC:Csecondary · CISA US
v3.05.3mediumCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N/E:Usecondary · CVSS-BT (t0sche)
03

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-284USCWE-284US
04

affected products (6)

Products and version ranges known to be affected.

05

advisories (1)

Vendor and ecosystem advisories describing this.

  • ICSA-18-226-03ICSA-18-226-03 Siemens Automation License Manager2018-08-07icsa · cisa_csaf_otUS

    CISA recommends users take defensive measures to minimize the exploitation risk of this vulnerability.

06

also known as (3)

Other names and identifiers for this entity.

07

sources

Which sources assert this record, and when.

cnnvdenisa_euvdcisa_csaf_otnvdNVDCVE.orgMITRE
published 2018-08-07modified 2026-06-17
08

references (6)

External citations — patches, advisories, analysis.

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