How severe is CVE-2023-31176?

CVE-2023-31176 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2023-31176 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-31176?

CVE-2023-31176 primarily affects Selinc Sel-451 Firmware. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-31176?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2023-31176 published?

CVE-2023-31176 was published on 2023-11-30 and last updated on 2026-06-17.

CVE-2023-31176

CVE-2023-31176 is a high-severity vulnerability in Selinc Sel-451 Firmware with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-331.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (56th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-331
Affected product: Selinc Sel-451 Firmware
Published: 2023-11-30
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2023-31176?: 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.
How severe is CVE-2023-31176?: CVE-2023-31176 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2023-31176 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-31176?: CVE-2023-31176 primarily affects Selinc Sel-451 Firmware. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-31176?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2023-31176 published?: CVE-2023-31176 was published on 2023-11-30 and last updated on 2026-06-17.

References

Affected products (3)

cpe:2.3:o:selinc:sel-451_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:selinc:sel-451_firmware:r326-v0:*:*:*:*:*:*:*
cpe:2.3:o:selinc:sel-451_firmware:r327-v0:*:*:*:*:*:*:*

More vulnerabilities in Selinc Sel-451 Firmware

CVE-2023-34388 — Medium (CVSS 6.5): An Improper Authentication vulnerability in the Schweitzer Engineering Laboratories SEL-451 could allow a remote…
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