A CWE-306: Missing Authentication for Critical Function vulnerability exists in IGSS (Versions 14 and prior using the service: IGSSupdate),…

published 2020-03-23 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-28604

cvss: 7.8; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 0.5%; EPSS 0.5% chance of exploitation in 30 days, percentile 43%
public exploits: 0; none known

A CWE-306: Missing Authentication for Critical Function vulnerability exists in IGSS (Versions 14 and prior using the service: IGSSupdate), which could allow a local user to execute processes that otherwise require escalation privileges when sending local network commands to the IGSS Update Service.

Patch / fix

fixed in 1

schneider-electric interactive_graphical_scada_system 14.0.0.20009

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-20-084-02 updated 2020-03-24 cvss 7.8

Schneider Electric IGSS SCADA Software

Schneider Electric Software, LLC IGSS (Interactive Graphical SCADA System) <= 14
affected: mitigation “Schneider Electric has provided IGSS14 Version 14.0.0.20009 to address these vulnerabilities. Users are recommended to update to IGSS Version 14.” se.com

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

Exploit prediction

0.51% chance of exploitation in the next 30 days, higher than 43% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
NVD	3.1	7.8	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD	2.0	4.6	AV:L/AC:L/Au:N/C:P/I:P/A:P

Affected products

n/a IGSS (Interactive Graphical SCADA System) (IGSS Version prior to 14.0.0.20009)

Classification

Weakness

CWE-306 Missing Authentication for Critical Functionality

References

se.com /ww/en/download/document/SEVD-2020-070-01/
vendor-advisory
zerodayinitiative.com /advisories/ZDI-20-370/
third-party-advisory, vdb-entry

Sources

CVE List CVE-2020-7479
NVD CVE-2020-7479

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary