CVE-2023-31151

Name: CVE-2023-31151
Creator: NVD / NIST
Published: 2023-05-10T20:15:10.147+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.2/10EPSS 0.25%

Last modified Jun 17, 2026

CVE-2023-31151 is a medium-severity vulnerability rated 4.2/10 on the CVSS scale. An Improper Certificate Validation vulnerability in the Schweitzer Engineering Laboratories Real-Time Automation Controller (SEL RTAC) Web Interface could allow a remote unauthenticated attacker to conduct a man-in-the-middle (MitM) attack. See SEL Service Bulletin dated 2022-11-15 for more details. . EPSS estimates a 0.25% chance of exploitation in the next 30 days.

Description

An Improper Certificate Validation vulnerability in the Schweitzer Engineering Laboratories Real-Time Automation Controller (SEL RTAC) Web Interface could allow a remote unauthenticated attacker to conduct a man-in-the-middle (MitM) attack. See SEL Service Bulletin dated 2022-11-15 for more details.

Metrics

CVSS 3.1

4.2/10

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N

EPSS Probability

0.25%

15.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Selinc	Sel-2241 Rtac Module Firmware	>= r147-v0, < r150-v2
Selinc	Sel-3350 Firmware	>= r148-v0, < r150-v2
Selinc	Sel-3505 Firmware	>= r147-v0, < r150-v2
Selinc	Sel-3505-3 Firmware	>= r147-v0, < r150-v2
Selinc	Sel-3530 Firmware	>= r147-v0, < r150-v2
Selinc	Sel-3530-4 Firmware	>= r147-v0, < r150-v2
Selinc	Sel-3532 Firmware	>= r147-v0, < r150-v2
Selinc	Sel-3555 Firmware	>= r147-v0, < r150-v2
Selinc	Sel-3560e Firmware	>= r147-v0, < r150-v2
Selinc	Sel-3560s Firmware	>= r147-v0, < r150-v2

References

https://selinc.com/support/security-notifications/external-reports/Vendor Advisory
https://www.nozominetworks.com/blog/Third Party Advisory
https://selinc.com/support/security-notifications/external-reports/Vendor Advisory
https://www.nozominetworks.com/blog/Third Party Advisory

Timeline

Published: May 10, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-31151?

How severe is CVE-2023-31151?

CVE-2023-31151 has a CVSS score of 4.2/10 (MEDIUM severity). The EPSS model estimates a 0.25% probability of exploitation in the next 30 days.

How do I fix CVE-2023-31151?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-31151?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST