No exploitation reported

CVE-2020-7486

No exploitation reported by the sources we read.

Published2020-04-16
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

**VERSION NOT SUPPORTED WHEN ASSIGNED** A vulnerability could cause TCM modules to reset when under high network load in TCM v10.4.x and in system v10.3.x. This vulnerability was discovered and remediated in version v10.5.x on August 13, 2009. TCMs from v10.5.x and on will no longer exhibit this behavior.

Timeline

dates in UTC

2020-04-1619:15CVE 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-2020-7486?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2020-7486?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Schneider-electric tricon tcm 4351 firmwareversion to verify

Branch	Affected	Fixed in	Source
10.3	= 10.3.x	no fix published	NVD
10.4	= 10.4.x	no fix published	NVD

Schneider-electric tricon tcm 4351a firmwareversion to verify

Branch	Affected	Fixed in	Source
10.3	= 10.3.x	no fix published	NVD
10.4	= 10.4.x	no fix published	NVD

Schneider-electric tricon tcm 4351b firmwareversion to verify

Branch	Affected	Fixed in	Source
10.3	= 10.3.x	no fix published	NVD
10.4	= 10.4.x	no fix published	NVD

3 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-20-205-01 CISA2 known affected
Schneider Electric Triconex TriStation and Tricon Communication Module
TriStation 1131: v1.0.0 to v4.9.0 v4.10.0 and 4.12.0 operating on Windows NT Windows XP or Windows 7 · Tricon Communications Module (TCM) Models 4351 4352 4351A/B and 4352A/B installed in Tricon: v10.0 to v10.5.3 systems

Full record on NVD

Fix

Mitigation from the vendor CISA ICSA-20-205-01 · 2 productsSchneider Electric released TriStation v4.9.1 and v4.10.1 on May 30, 2013 and 4.13.0 on January 26, 2015 to address these issues. Tricon v10.5.0 was released on August 13, 2009 and v10.5.4 on February 2, 2012 to address the issues.
Mitigation from the vendor CISA ICSA-20-205-01 · 2 productsSchneider Electric notified customers of updated product availability via direct-to-customer notification and fixed versions of these offers are available for download here.
Mitigation from the vendor CISA ICSA-20-205-01 · 2 productsLocate control and safety system networks and remote devices behind firewalls and isolate them from the business network.
Mitigation from the vendor CISA ICSA-20-205-01 · 2 productsInstall physical controls so no unauthorized personnel can access industrial control and safety systems, components, peripheral equipment, and networks.
Mitigation from the vendor CISA ICSA-20-205-01 · 2 productsPlace all controllers in locked cabinets and never leave them in the “Program” mode.
Mitigation from the vendor CISA ICSA-20-205-01 · 2 productsScan all methods of mobile data exchange with the isolated network, such as CDs, USB drives, etc., before use in the terminals or nodes connected to these networks.

Advisories and patches

www.se.comVendor Advisory

Detection

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

Sources

NVDCVSS 3.17.5read 2026-10-23
NVDCVSS 2.05read 2026-10-23
NVDweakness (CWE)CWE-400read 2026-10-23
FIRST EPSSEPSS score1.6 %2026-10-22

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published: 2020-04-16
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2020-7486?

Is CVE-2020-7486 actively exploited?

Active exploitation of CVE-2020-7486 has not been confirmed. Its EPSS score was 1.6% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2020-7486?

CVE-2020-7486 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Hear about the next vulnerability in your software

Surveillance reads the versions in your stack — a domain, a lockfile or a list — checks each CVE against the ranges its sources publish, and alerts you when one you run is exploited or enters CISA KEV. A version it cannot read stays « version not verified ».

Get alerts for this product CISA KEV additions, October 2026 Search CVEs

No credit card required · No monthly cap on website lookups · 250 API requests/month

Go further

Following what attackers exploit right now? The CISA KEV additions of the month, with their patch deadlines.
Running this software? Vulnerability monitoring alerts you to new vulnerabilities in your products.

Related vulnerabilities

Same product first, then the same vendor advisory and the same publication week.

Back to CVE Database