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CVE-2012-5409

47
FAUCET Score

CVE-2012-5409 is a critical vulnerability affecting Siemens SiPass integrated MP2.6 and earlier, where the AscoServer.exe component fails to properly handle IOCP RPC messages. This allows unauthenticated remote attackers to write data to arbitrary memory locations, leading to arbitrary code execution. With a CVSS score of 10.0, this vulnerability is easily exploitable over the network with low attack complexity, resulting in complete compromise of confidentiality, integrity, and availability. While not listed on the KEV catalog, a public exploit (EDB-22397) demonstrating an arbitrary pointer dereference attack exists, though there is minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= mp2.6CPE matchmatch criteria
cpe:2.3:a:siemens:sipass_integrated:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

10.0HIGH

AV:N/AC:L/Au:N/C:C/I:C/A:C

Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
10.0
CvssVersion
2.0

Exploit Intelligence

EPSS Score
15.79%
Probability of exploitation in next 30 days
EPSS Percentile
96.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
ExploitDB: EDB-22397 · Nov 1, 2012
This CVE's current EPSS score of 0.1579 is in the 95th percentile among its peer group of 51,553 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

ics-cert.us-cert.gov / advisories/ICSA-12-305-01
ioactive.com / pdfs/SIEMENS_Sipass_Integrated_Ethernet_Bus_Arbitrary_Pointer_Dereference_V4.pdf
secunia.com / advisories/50900
Vendor Advisory
osvdb.org / 86129
siemens.com / corporate-technology/pool/de/forschungsfelder/siemens_security_advisory_ssa-938777.pdf
Vendor Advisory