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Fencer Intel
critical 9.8

CVE-2020-25159 json

Real Time Automation EtherNet/IP

published 5y ago modified 4mo ago also EUVD-2020-17850

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
3.0%
EPSS 3.0% chance of exploitation in 30 days, percentile 87%
public exploits
0
none known

Summary

499ES EtherNet/IP (ENIP) Adaptor Source Code is vulnerable to a stack-based buffer overflow, which may allow an attacker to send a specially crafted packet that may result in a denial-of-service condition or code execution.

Patch / fix

  • Real Time Automation 499ES EtherNet/IP (ENIP) Adaptor Source Code 2.28

Is CVE-2020-25159 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Vendor advisories

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

cisa ICSA-20-324-03 updated cvss 9.8

Real Time Automation EtherNet/IP

  • Real Time Automation (RTA) 499ES EtherNet/IP Adaptor Source Code a TCP/IP stack < 2.28
    affected: mitigation “Please contact Real Time Automation for additional details and support.” rtautomation.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

3.03% chance of exploitation in the next 30 days, higher than 87% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

Affected products

  • Real Time Automation 499ES EtherNet/IP (ENIP) Adaptor Source Code

Classification

Weakness

References

Sources

Fencer Intel 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.