How severe is CVE-2012-5409?

CVE-2012-5409 has a CVSS 2.0 base score of 10.0, rated critical severity.

Is CVE-2012-5409 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 16% (96th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2012-5409?

CVE-2012-5409 affects Siemens Sipass Integrated. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2012-5409?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2012-5409 published?

CVE-2012-5409 was published on 2012-11-01 and last updated on 2026-06-16.

CVE-2012-5409

CVE-2012-5409 is a critical-severity vulnerability in Siemens Sipass Integrated with a CVSS 2.0 base score of 10.0. Its EPSS exploit-prediction score of 16% places it in the 96th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-119.

Key facts

Severity: Critical (CVSS 2.0 base score 10.0)
EPSS exploit prediction: 16% (96th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Siemens Sipass Integrated
Published: 2012-11-01
Last modified: 2026-06-16

Description

AscoServer.exe in the server in Siemens SiPass integrated MP2.6 and earlier does not properly handle IOCP RPC messages received over an Ethernet network, which allows remote attackers to write data to any memory location and consequently execute arbitrary code via crafted messages, as demonstrated by an arbitrary pointer dereference attack or a buffer overflow attack.

Frequently asked questions

What is CVE-2012-5409?: AscoServer.exe in the server in Siemens SiPass integrated MP2.6 and earlier does not properly handle IOCP RPC messages received over an Ethernet network, which allows remote attackers to write data to any memory location and consequently execute arbitrary code via crafted messages, as demonstrated by an arbitrary pointer dereference attack or a buffer overflow attack.
How severe is CVE-2012-5409?: CVE-2012-5409 has a CVSS 2.0 base score of 10.0, rated critical severity.
Is CVE-2012-5409 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 16% (96th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2012-5409?: CVE-2012-5409 affects Siemens Sipass Integrated. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2012-5409?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2012-5409 published?: CVE-2012-5409 was published on 2012-11-01 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:siemens:sipass_integrated:*:*:*:*:*:*:*:*

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