CVE-2012-5409

highpriority · attend · 56EPSS 0.158 · 97 %ileexploit · PoCEUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

1 exploit · PoC

Likely / severe?

15.8% (97th) EPSS

CVSS 10 · high

Is it mine?

4 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · cisa_csaf_ot · nvd

EPSS · scored 2026-10-27

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.

remediations

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

No vendor fix yet; a mitigation is available.

MitigationSiPass integratedcisa_csaf_ot
The affected software components are implemented under the assumption of running in a protected IT environment. Siemens strongly recommends protecting systems according to common security practices.

cvss

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

10.0

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 9–10

v2.010highAV:N/AC:L/Au:N/C:C/I:C/A:Cprimary · NVD / NIST USexploitability 10 · impact 10

v2.010criticalAV:N/AC:L/Au:N/C:C/I:C/A:Csecondary · CISA US

v2.09highAV:N/AC:L/Au:N/C:C/I:C/A:C/E:POCsecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-119USprimaryCWE-121US

exploits (1)

Public proof-of-concept and weaponised exploit code.

EDB-22397SIEMENS Sipass Integrated 2.6 Ethernet Bus - Arbitrary Pointer DereferencePoC · exploit_db

affected products (4)

Products and version ranges known to be affected.

Siemens SiPass integrated: <=MP2.6all versionscisa_csaf_otUS
Siemens SiPass integrated≤ MP2.6cisa_csaf_otUS
n/a n/a≤ n/aenisa_euvdEU
siemens sipass integrated≤ mp2.6nvdUScpe:2.3:a:siemens:sipass_integrated:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

ICSA-12-305-01Siemens SiPass Server Buffer Overflow2012-08-04icsa · cisa_csaf_otUS
This CSAF advisory was extracted from unstructured data and may contain inaccuracies. If you notice any errors, please reach out to the designated contact at CISA CSAF: central@cisa.dhs.gov

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 NVD CVE.org MITRE

published 2012-11-01modified 2026-06-16

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+21038 more

references (12)

External citations — patches, advisories, analysis.

scry

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