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CVE-2023-28829

23
FAUCET Score

CVE-2023-28829 is a high-severity vulnerability (CVSS 8.8) affecting Siemens SIMATIC NET PC Software, SIMATIC PCS 7, SIMATIC WinCC (versions prior to V8.0), and SINAUT Software ST7sc. The flaw stems from the use of legacy OPC services (DA, HDA, AE) that lack modern authentication and encryption, making them susceptible to compromise. An authenticated attacker can exploit this remotely with low complexity, leading to high impact on confidentiality, integrity, and availability. Currently, there is no evidence of active exploitation, public exploit code, or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
14.0CPE matchmatch criteria
cpe:2.3:a:siemens:simatic_net_pc_software:14.0:*:*:*:*:*:*:*
15.0CPE matchmatch criteria
cpe:2.3:a:siemens:simatic_net_pc_software:15.0:*:*:*:*:*:*:*
8.2CPE matchmatch criteria
cpe:2.3:a:siemens:simatic_pcs_7:8.2:-:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:a:siemens:simatic_pcs_7:9.0:-:*:*:*:*:*:*
9.1CPE matchmatch criteria
cpe:2.3:a:siemens:simatic_pcs_7:9.1:-:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

3.9LOW

CVSS:3.1/AV:A/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:L

Attack Vector
ADJACENT_NETWORK
Attack Complexity
HIGH
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
LOW
Exploitability Score
0.5
Impact Score
3.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.29%
Probability of exploitation in next 30 days
EPSS Percentile
21.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0029 is in the 9th percentile among its peer group of 17,829 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 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

cert-portal.siemens.com / productcert/pdf/ssa-508677.pdf
PatchVendor Advisory