How severe is CVE-2012-4691?

CVE-2012-4691 has a CVSS 2.0 base score of 3.3, rated low severity.

Is CVE-2012-4691 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2012-4691?

CVE-2012-4691 primarily affects Siemens Automation License Manager. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2012-4691?

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

When was CVE-2012-4691 published?

CVE-2012-4691 was published on 2012-12-18 and last updated on 2026-06-16.

CVE-2012-4691

CVE-2012-4691 is a low-severity vulnerability in Siemens Automation License Manager with a CVSS 2.0 base score of 3.3. 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-399.

Key facts

Severity: Low (CVSS 2.0 base score 3.3)
EPSS exploit prediction: 1% (55th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-399
Affected product: Siemens Automation License Manager
Published: 2012-12-18
Last modified: 2026-06-16

Description

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.

Frequently asked questions

What is CVE-2012-4691?: 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.
How severe is CVE-2012-4691?: CVE-2012-4691 has a CVSS 2.0 base score of 3.3, rated low severity.
Is CVE-2012-4691 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2012-4691?: CVE-2012-4691 primarily affects Siemens Automation License Manager. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2012-4691?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2012-4691 published?: CVE-2012-4691 was published on 2012-12-18 and last updated on 2026-06-16.

References

Affected products (4)

cpe:2.3:a:siemens:automation_license_manager:4.0:*:*:*:*:*:*:*
cpe:2.3:a:siemens:automation_license_manager:5.0:*:*:*:*:*:*:*
cpe:2.3:a:siemens:automation_license_manager:5.1:*:*:*:*:*:*:*
cpe:2.3:a:siemens:automation_license_manager:5.1:sp1:*:*:*:*:*:*

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Other CWE-399 (Resource Management Errors) vulnerabilities

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CVE-2015-0335 — Critical (CVSS 10.0): Adobe Flash Player before 13.0.0.277 and 14.x through 17.x before 17.0.0.134 on Windows and OS X and before…
CVE-2015-0333 — Critical (CVSS 10.0): Adobe Flash Player before 13.0.0.277 and 14.x through 17.x before 17.0.0.134 on Windows and OS X and before…
CVE-2014-4121 — Critical (CVSS 10.0): Microsoft .NET Framework 2.0 SP2, 3.5, 3.5.1, 4, 4.5, 4.5.1, and 4.5.2 does not properly parse internationalized…
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