CVE-2023-34391: Insecure Inherited Permissions vulnerability in Schweitzer Engineering Laboratories SEL-5033 AcSELerator RTAC

Q: How do I fix CVE-2023-34391?

sel-5033 acselerator real-time automation controller: upgrade to 1.35.151.21000. Exact commands for each OS are on this page.

Q: Is CVE-2023-34391 being exploited?

CVE-2023-34391 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2023-34391 affect?

CVE-2023-34391 affects sel-5033 acselerator real-time automation controller. Severity is high (CVSS 7.4). Insecure Inherited Permissions vulnerability in Schweitzer Engineering Laboratories SEL-5033 AcSELerator RTAC Software on Windows allows Leveraging/Manipulating Configuration File Search Paths. See Instruction Manual Appendix A [Cybersecur

Routine

HIGH 7.4UPGRADE

CVE-2023-34391 is a high-severity flaw (CVSS 7.4) affecting sel-5033 acselerator real-time automation controller. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Insecure Inherited Permissions vulnerability in Schweitzer Engineering Laboratories SEL-5033 AcSELerator RTAC Software on Windows allows Leveraging/Manipulating Configuration File Search Paths. See Instruction Manual Appendix A [Cybersecurity] tag dated 20230522 for more details. This issue affects SEL-5033 AcSELerator RTAC Software: before 1.35.151.21000.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.4 (High)
Attack vector	Local
Attack complexity	High
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.1% (top 97%)
CISA exploited list	No
Weakness	CWE-277, CWE-732
Published	2023-08-31
Last modified	2026-06-17

Publisher (CNA): Schweitzer Engineering Laboratories, Inc. · Vendor: selinc

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2023-08-31 16:15 UTCPublished CVE record published
2026-06-17 06:03 UTCUpdated Record last modified

selinc sel-5033 acselerator real-time automation controller UPGRADE

Affected: < 1.35.151.21000

Fixed in: 1.35.151.21000

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy sel-5033-acselerator-real-time-automation-controller || rpm -q sel-5033-acselerator-real-time-automation-controller || sel-5033-acselerator-real-time-automation-controller --version

2. UPGRADE to 1.35.151.21000 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade sel-5033-acselerator-real-time-automation-controller

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade sel-5033-acselerator-real-time-automation-controller

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2023-34391?

sel-5033 acselerator real-time automation controller: upgrade to 1.35.151.21000. Exact commands for each OS are on this page.

Is CVE-2023-34391 being exploited?

CVE-2023-34391 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2023-34391 affect?

CVE-2023-34391 affects sel-5033 acselerator real-time automation controller. Severity is high (CVSS 7.4). Insecure Inherited Permissions vulnerability in Schweitzer Engineering Laboratories SEL-5033 AcSELerator RTAC Software on Windows allows Leveraging/Manipulating Configuration File Search Paths. See Instruction Manual Appendix A [Cybersecur

How urgent is CVE-2023-34391?

Priority 27/100. High severity

Software pages

Windows vulnerabilities

References

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