CVE-2011-4531

mediumpriority · track · 33EPSS 0.084 · 95 %ileexploit · functionalEUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

1 exploit · functional

Likely / severe?

8.41% (95th) 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

Siemens Automation License Manager (ALM) 4.0 through 5.1+SP1+Upd1 allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via crafted content in a (1) get_target_ocx_param or (2) send_target_ocx_param command.

remediations

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

No vendor fix yet; a mitigation is available.

MitigationAutomation License Managercisa_csaf_ot
Customers of vulnerable versions of Siemens ALM should deploy the Siemens patch that Siemens sent out to its customers.

cvss

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

5.0

010

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

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

v2.05mediumAV:N/AC:L/Au:N/C:N/I:N/A:Psecondary · CISA US

v2.04.3mediumAV:N/AC:L/Au:N/C:N/I:N/A:P/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-20USprimaryCWE-20US

exploits (1)

Public proof-of-concept and weaponised exploit code.

EDB-18165siemens automation license manager 500.0.122.1 - Multiple Vulnerabilitiesfunctional · exploit_db

affected products (6)

Products and version ranges known to be affected.

Siemens Automation License Manager: >=2.0|<5.1+SP1+Upd2all versionscisa_csaf_otUS
Siemens Automation License Manager: >=4.0|<5.1+SP1+Upd1all versionscisa_csaf_otUS
Siemens Automation License Manager2.0| → 5.1+SP1+Upd2cisa_csaf_otUS
Siemens Automation License Manager4.0| → 5.1+SP1+Upd1cisa_csaf_otUS
n/a n/a≤ n/aenisa_euvdEU
siemens automation license manager≤ 5.1nvdUScpe:2.3:a:siemens:automation_license_manager:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

ICSA-11-361-01Siemens Automation License Manager Vulnerabilities2011-09-29icsa · cisa_csaf_otUS
This CSAF advisory was extracted from unstructured data and may contain inaccuracies. If you notice any errors, please reach out to the designated contact at CISA CSAF: central@cisa.dhs.gov

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cisa_csaf_ot nvd NVD CVE.org MITRE

published 2012-01-08modified 2026-06-16

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+25188 more

references (13)

External citations — patches, advisories, analysis.

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