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CVE-2020-7588

21
FAUCET Score

CVE-2020-7588 is a denial-of-service vulnerability affecting numerous Siemens industrial control system products, including various versions of Opcenter, SIMATIC IT, SIMATIC Notifier Server, SIMATIC PCS neo, SIMATIC STEP 7 (TIA Portal), SIMOCODE ES, and Soft Starter ES. An unauthenticated attacker can trigger a partial denial-of-service by sending a specially crafted packet, causing the affected service to restart. This vulnerability has a CVSSv3 score of 5.3 (Medium), indicating a low-impact availability compromise with low attack complexity and no user interaction required. There is no public exploit code available, nor is there evidence of active exploitation or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
< 3.2CPE matchmatch criteria
cpe:2.3:a:siemens:opcenter_execution_discrete:*:*:*:*:*:*:*:*
< 3.2CPE matchmatch criteria
cpe:2.3:a:siemens:opcenter_execution_foundation:*:*:*:*:*:*:*:*
< 3.2CPE matchmatch criteria
cpe:2.3:a:siemens:opcenter_execution_process:*:*:*:*:*:*:*:*
All Versions ImpactedCPE matchmatch criteria
cpe:2.3:a:siemens:opcenter_intelligence:*:*:*:*:*:*:*:*
< 11.3CPE matchmatch criteria
cpe:2.3:a:siemens:opcenter_quality:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.3MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
LOW
Exploitability Score
3.9
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.15%
Probability of exploitation in next 30 days
EPSS Percentile
80.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0215 is in the 69th percentile among its peer group of 23,705 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

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-841348.pdf
Vendor Advisory