How severe is CVE-2023-23591?

CVE-2023-23591 has a CVSS 3.x base score of 4.9, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2023-23591 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-23591?

CVE-2023-23591 affects Terminalfour. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-23591?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2023-23591 published?

CVE-2023-23591 was published on 2023-04-12 and last updated on 2026-06-17.

CVE-2023-23591

CVE-2023-23591 is a medium-severity vulnerability in Terminalfour with a CVSS 3.x base score of 4.9. 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-532.

Key facts

Severity: Medium (CVSS 3.x base score 4.9)
EPSS exploit prediction: 1% (42nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-532
Affected product: Terminalfour
Published: 2023-04-12
Last modified: 2026-06-17

Description

The Logback component in Terminalfour before 8.3.14.1 allows OS administrators to obtain sensitive information from application server logs when debug logging is enabled. The fixed versions are 8.2.18.7, 8.2.18.2.2, 8.3.11.1, and 8.3.14.1.

Frequently asked questions

What is CVE-2023-23591?: The Logback component in Terminalfour before 8.3.14.1 allows OS administrators to obtain sensitive information from application server logs when debug logging is enabled. The fixed versions are 8.2.18.7, 8.2.18.2.2, 8.3.11.1, and 8.3.14.1.
How severe is CVE-2023-23591?: CVE-2023-23591 has a CVSS 3.x base score of 4.9, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2023-23591 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-23591?: CVE-2023-23591 affects Terminalfour. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-23591?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-23591 published?: CVE-2023-23591 was published on 2023-04-12 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:terminalfour:terminalfour:*:*:*:*:*:*:*:*

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