No exploitation reportedFix available

CVE-2020-7587

Q: Is CVE-2020-7587 actively exploited?

Active exploitation of CVE-2020-7587 has not been confirmed. Its EPSS score was 2.5% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2020-7587?

CVE-2020-7587 has a CVSS v3 base score of 8.2 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L.

No exploitation reported by the sources we read.

Published2020-07-14
Fixed in15.1
WeaknessCWE-400

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

A vulnerability has been identified in Opcenter Execution Discrete (All versions < V3.2), Opcenter Execution Foundation (All versions < V3.2), Opcenter Execution Process (All versions < V3.2), Opcenter Intelligence (All versions < V3.3), Opcenter Quality (All versions < V11.3), Opcenter RD&L (V8.0), SIMATIC IT LMS (All versions < V2.6), SIMATIC IT Production Suite (All versions < V8.0), SIMATIC Notifier Server for Windows (All versions), SIMATIC PCS neo (All versions < V3.0 SP1), SIMATIC STEP 7 (TIA Portal) V15 (All versions < V15.1 Update 5), SIMATIC STEP 7 (TIA Portal) V16 (All versions < V16 Update 2), SIMOCODE ES V15.1 (All versions < V15.1 Update 4), SIMOCODE ES V16 (All versions < V16 Update 1), Soft Starter ES V15.1 (All versions < V15.1 Update 3), Soft Starter ES V16 (All versions < V16 Update 1). Sending multiple specially crafted packets to the affected service could cause a partial remote denial-of-service, that would cause the service to restart itself. On some cases the vulnerability could leak random information from the remote service.

Timeline

dates in UTC

2020-07-1414:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2020-7587?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2020-7587?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Siemens simatic step 7

Branch	Affected	Fixed in	Source
15.x	≥ 15, < 15.1	15.1	NVD
15.1	= 15.1	no fix published	NVD
16.x	= 16	no fix published	NVD

Siemens simocode es

Branch	Affected	Fixed in	Source
15.1	< 15.1	15.1	NVD
15.1	= 15.1	no fix published	NVD
16.x	= 16	no fix published	NVD

Siemens simatic pcs neo

Branch	Affected	Fixed in	Source
3.0	< 3.0	3.0	NVD
3.0	= 3.0	no fix published	NVD

10 more products in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Vendor advisories

ICSA-20-196-05 CISA16 known affected
Siemens UMC Stack (Update H)
Opcenter Execution Discrete · Opcenter Execution Foundation · Opcenter Execution Process · +13 more

Full record on NVD

Fix

Update Siemens simatic step 7 to 15.1
Vendor fix CISA ICSA-20-196-05 · 1 productUpdate to V16 Update 2 or later version
Vendor fix CISA ICSA-20-196-05 · 1 productUpdate to V3.0 SP1 or later version. To obtain SIMATIC PCS neo contact your local support.
Vendor fix CISA ICSA-20-196-05 · 1 productUpdate to V15.1 Update 5 or later version
Vendor fix CISA ICSA-20-196-05 · 3 productsUpdate to V3.2 or later version
Vendor fix CISA ICSA-20-196-05 · 1 productUpdate to V8.1 or later version
Vendor fix CISA ICSA-20-196-05 · 1 productUpdate to V11.3 or later version

Advisories and patches

cert-portal.siemens.comVendor Advisory

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

NVDCVSS 3.18.2read 2026-10-23
NVDCVSS 2.06.4read 2026-10-23
CNAweakness (CWE)CWE-400read 2026-10-23
NVDweakness (CWE)CWE-400read 2026-10-23
FIRST EPSSEPSS score2.5 %2026-10-22

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L
Published: 2020-07-14
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2020-7587?

Is CVE-2020-7587 actively exploited?

Active exploitation of CVE-2020-7587 has not been confirmed. Its EPSS score was 2.5% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2020-7587?

CVE-2020-7587 has a CVSS v3 base score of 8.2 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L.

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