CVE-2023-31176 json
Insufficient entropy vulnerability could lead to authentication bypass
published 2023-11-30 2 y ago modified 2026-06-17 4 mo ago also EUVD-2023-35492
- cvss
- 7.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.9%
- EPSS 0.9% chance of exploitation in 30 days, percentile 60%
- public exploits
- 0
- none known
Summary
An Insufficient Entropy vulnerability in the Schweitzer Engineering Laboratories SEL-451 could allow an unauthenticated remote attacker to brute-force session tokens and bypass authentication.
See product Instruction Manual Appendix A dated 20230830 for more details.
Patch / fix
- Schweitzer Engineering Laboratories SEL-451 R315-V4, R316-V4, R317-V4, R318-V5, R320-V3, R321-V3, R322-V3, R323-V5, R324-V4, R325-V3, R326-V1, R327-V1
- selinc sel-451_firmware R315-V4, R316-V4, R317-V4, R318-V5, R320-V3, R321-V3, R322-V3, R323-V5, R324-V4, R325-V3, R326-V1, R327-V1
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 2 y ago
Exploit prediction
0.93% chance of exploitation in the next 30 days, higher than 60% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
| NVD | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected products
- Schweitzer Engineering Laboratories SEL-451
- selinc sel-451_firmware
Classification
- Weakness
-
- CWE-331 Insufficient Entropy
References
-
selinc.com
/support/security-notifications/external-reports/
vendor-advisory
-
nozominetworks.com
/blog/
third-party-advisory
Sources
- CVE List CVE-2023-31176
- NVD CVE-2023-31176
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