CVE-2023-31166 — An Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal'

An Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability in the Schweitzer Engineering Laboratories Real-Time Automation Controller (SEL RTAC) Web Interface could allow a remote authenticated attacker to create folders in arbitrary

01What is this vulnerability?

An Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability in the Schweitzer Engineering Laboratories Real-Time Automation Controller (SEL RTAC) Web Interface could allow a remote authenticated attacker to create folders in arbitrary paths of the file system.

02Affected products

Vendor	Product	Versions
Schweitzer Engineering Laboratories	SEL	3505 — R126-V0, R126-V0, R126-V0, R126-V0
Schweitzer Engineering Laboratories	SEL	3505-3 — R132-V0, R132-V0, R132-V0, R132-V0
Schweitzer Engineering Laboratories	SEL	3530 — R126-V0, R126-V0, R126-V0, R126-V0
Schweitzer Engineering Laboratories	SEL	3530-4 — R126-V0, R126-V0, R126-V0, R126-V0
Schweitzer Engineering Laboratories	SEL	3532 — R132-V0, R132-V0, R132-V0, R132-V0
Schweitzer Engineering Laboratories	SEL	3555 — R134-V0, R134-V0, R134-V0, R134-V0
Schweitzer Engineering Laboratories	SEL	3560S — R144-V2, R144-V2, R144-V2, R144-V2
Schweitzer Engineering Laboratories	SEL	3560E — R144-V2, R144-V2, R144-V2, R144-V2
Schweitzer Engineering Laboratories	SEL	2241 RTAC module — R126-V0, R126-V0, R126-V0, R126-V0
Schweitzer Engineering Laboratories	SEL	3350 — R148-V0, R148-V0, R148-V0

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2023-05-10T19:25:59.606Z
• Last modified: 2025-01-24T19:28:19.480Z

09References

• selinc.com — https://selinc.com/support/security-notifications/external-reports/
• www.nozominetworks.com — https://www.nozominetworks.com/blog/