What’s Vulnerable › Vulnerabilities

CVE-2023-2267: Improper input validation could lead to reflection injection attacks

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-11-30 · updated 2026-06-17
• Weakness: CWE-20

Description

An Improper Input Validation vulnerability in Schweitzer Engineering Laboratories SEL-411L could allow an attacker to perform reflection attacks against an authorized and authenticated user. See product Instruction Manual Appendix A dated 20230830 for more details.

Affected products

• Schweitzer Engineering Laboratories SEL-411L: from r118-v0 before r118-v4; from r119-v0 before r119-v5; from r120-v0 before r120-v6; from r121-v0 before r121-v3; from r122-v0 before r122-v3; from r123-v0 before r123-v3 — fixed in r118-v4, r119-v5, r120-v6, r121-v3, r122-v3, r123-v3

How to fix

Upgrade to a fixed version: Schweitzer Engineering Laboratories SEL-411L r118-v4, r119-v5, r120-v6, r121-v3. Check the vendor advisory for mitigations.

References

• https://selinc.com/support/security-notifications/external-reports/
• https://selinc.com/support/security-notifications/external-reports/

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