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Fencer Vulns
medium 5.3

CVE-2021-22749 json

A CWE-200: Exposure of Sensitive Information to an Unauthorized Actor vulnerability exists in Modicon X80 BMXNOR0200H RTU SV1.70 IR22 and p…

published 2021-06-11 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-9884

cvss
5.3
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.9%
EPSS 0.9% chance of exploitation in 30 days, percentile 60%
public exploits
0
none known

Summary

A CWE-200: Exposure of Sensitive Information to an Unauthorized Actor vulnerability exists in Modicon X80 BMXNOR0200H RTU SV1.70 IR22 and prior that could cause information leak concerning the current RTU configuration including communication parameters dedicated to telemetry, when a specially crafted HTTP request is sent to the web server of the module.

Vendor advisories

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

cisa ICSA-21-159-05 updated cvss 5.3

Schneider Electric Modicon X80

  • Schneider Electric Software, LLC Modicon X80 BMXNOR0200H RTU <= SV1.70 IR22
    affected: vendor fix, mitigation “Set up network segmentation and implement a firewall to block all unauthorized access to HTTP Port 80/TCP on the controllers.” download.schneider-electric.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

0.92% chance of exploitation in the next 30 days, higher than 60% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:P/I:N/A:N

Affected products

  • n/a Modicon X80 BMXNOR0200H RTU SV1.70 IR22 and prior

Classification

Weakness
  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

References

Sources

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.