How severe is CVE-2011-4530?

CVE-2011-4530 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2011-4530 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (90th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2011-4530?

CVE-2011-4530 affects Siemens Automation License Manager. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2011-4530?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2011-4530 published?

CVE-2011-4530 was published on 2012-01-08 and last updated on 2026-06-16.

CVE-2011-4530

CVE-2011-4530 is a medium-severity vulnerability in Siemens Automation License Manager with a CVSS 2.0 base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 4% (90th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Siemens Automation License Manager
Published: 2012-01-08
Last modified: 2026-06-16

Description

Siemens Automation License Manager (ALM) 4.0 through 5.1+SP1+Upd1 does not properly copy fields obtained from clients, which allows remote attackers to cause a denial of service (exception and daemon crash) via long fields, as demonstrated by fields to the (1) open_session->workstation->NAME or (2) grant->VERSION function.

Frequently asked questions

What is CVE-2011-4530?: Siemens Automation License Manager (ALM) 4.0 through 5.1+SP1+Upd1 does not properly copy fields obtained from clients, which allows remote attackers to cause a denial of service (exception and daemon crash) via long fields, as demonstrated by fields to the (1) open_session->workstation->NAME or (2) grant->VERSION function.
How severe is CVE-2011-4530?: CVE-2011-4530 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2011-4530 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (90th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-4530?: CVE-2011-4530 affects Siemens Automation License Manager. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2011-4530?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2011-4530 published?: CVE-2011-4530 was published on 2012-01-08 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:siemens:automation_license_manager:*:sp1:*:*:*:*:*:*

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