How severe is CVE-2011-4531?

CVE-2011-4531 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2011-4531 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 9% (95th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2011-4531?

CVE-2011-4531 affects Siemens Automation License Manager. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2011-4531?

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

When was CVE-2011-4531 published?

CVE-2011-4531 was published on 2012-01-08 and last updated on 2026-06-16.

CVE-2011-4531

CVE-2011-4531 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: 9% (95th 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 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.

Frequently asked questions

What is CVE-2011-4531?: 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.
How severe is CVE-2011-4531?: CVE-2011-4531 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2011-4531 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 9% (95th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-4531?: CVE-2011-4531 affects Siemens Automation License Manager. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2011-4531?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2011-4531 published?: CVE-2011-4531 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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