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CVE-2015-1601

18
FAUCET Score

CVE-2015-1601 describes a man-in-the-middle vulnerability in Siemens SIMATIC STEP 7 (TIA Portal) versions 12 and 13 prior to SP1 Upd1. This flaw allows attackers to intercept and potentially modify sensitive data transmitted over the network. With a CVSS score of 6.8, it is considered a medium-severity vulnerability, requiring moderate attack complexity but potentially leading to partial compromise of confidentiality, integrity, and availability. While there is no evidence of active exploitation or public exploit code, the vulnerability has garnered some community discussion and media coverage, indicating awareness within the cybersecurity landscape.

Impacted Technologies

VendorProductVersion(s)CPE
<= 13CPE matchmatch criteria
cpe:2.3:a:siemens:simatic_step_7:*:sp1:*:*:*:*:*:*
12CPE matchmatch criteria
cpe:2.3:a:siemens:simatic_step_7:12:*:*:*:*:*:*:*
13CPE matchmatch criteria
cpe:2.3:a:siemens:simatic_step_7:13:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

6.8MEDIUM

AV:N/AC:M/Au:N/C:P/I:P/A:P

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
1.43%
Probability of exploitation in next 30 days
EPSS Percentile
70.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0143 is in the 41st percentile among its peer group of 19,956 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

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

Remediation

Remediation records are not available for this CVE.

References

cert-portal.siemens.com / productcert/pdf/ssa-487246.pdf
securityfocus.com / bid/72691
siemens.com / innovation/pool/de/forschungsfelder/siemens_security_advisory_ssa-315836.pdf
PatchVendor Advisory