CVE-2012-4691

lowpriority · track · 13EPSS 0.009 · 59 %ileDEEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.89% (59th) EPSS

CVSS 3.3 · low

Is it mine?

7 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · cisa_csaf_ot · nvd

EPSS · scored 2026-10-27

Memory leak in Siemens Automation License Manager (ALM) 4.x and 5.x before 5.2 allows remote attackers to cause a denial of service (memory consumption) via crafted packets.

remediations

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

A vendor fix is available.

FixedAutomation License Managersiemens_psirt
Update to V5.2 or later version
https://support.industry.siemens.com/cs/ww/en/view/114358/
FixedAutomation License Managercisa_csaf_ot
Update to V5.2 or later version
https://support.industry.siemens.com/cs/ww/en/view/114358/
MitigationAutomation License Managersiemens_psirt
If remote connections are needed, limit remote access to port 4410/tcp to trusted systems only
MitigationAutomation License Managercisa_csaf_ot
If remote connections are needed, limit remote access to port 4410/tcp to trusted systems only

cvss

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

8.6

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–high · 2.8–8.6

v2.03.3lowAV:A/AC:L/Au:N/C:N/I:N/A:Pprimary · NVD / NIST USexploitability 6.5 · impact 2.9

v2.02.8lowAV:A/AC:L/Au:N/C:N/I:N/A:P/E:Usecondary · CVSS-BT (t0sche)

v3.18.6highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:Hsecondary · CISA US

v3.18.6highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:Hsecondary · Siemens ProductCERT DE

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-399USprimaryCWE-400USCWE-400US

affected products (7)

Products and version ranges known to be affected.

Automation License Managerall versionscisa_csaf_otUS
Siemens Automation License Manager≤ vers:intdot/>=4.0|<5.2cisa_csaf_otUS
n/a n/a≤ n/aenisa_euvdEU
siemens automation license manager= 4.0nvdUScpe:2.3:a:siemens:automation_license_manager:*:*:*:*:*:*:*:*
siemens automation license manager= 5.0nvdUScpe:2.3:a:siemens:automation_license_manager:*:*:*:*:*:*:*:*
siemens automation license manager= 5.1nvdUScpe:2.3:a:siemens:automation_license_manager:*:*:*:*:*:*:*:*
Siemens Automation License Manager≤ vers:intdot/>=4.0|<5.2siemens_psirtDE

advisories (2)

Vendor and ecosystem advisories describing this.

SSA-783261SSA-783261: Denial of Service Vulnerability in Automation License Manager (ALM) Before V5.22012-12-12csaf · siemens_psirtDE
A vulnerability was identified in the Automation License Manager software before V5.2 that could be triggered by sending specially crafted packets to port 4410/tcp of an affected system. This could cause a denial of service preventing legitimate users from using the system. Siemens has released a new version for Automation License Manager and recommends to update to the latest version.
ICSA-12-349-01Siemens Automation License Manager Uncontrolled Resource Consumption2012-12-12icsa · cisa_csaf_otUS
A vulnerability was identified in the Automation License Manager software before V5.2 that could be triggered by sending specially crafted packets to port 4410/tcp of an affected system. This could cause a denial of service preventing legitimate users from using the system. Siemens has released a new version for Automation License Manager and recommends to update to the latest version.

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 siemens_psirt NVD CVE.org MITRE

published 2012-12-18modified 2026-06-16

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+3721 more

references (8)

External citations — patches, advisories, analysis.

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