How severe is CVE-2023-54331?

CVE-2023-54331 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-54331 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (10th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-54331?

CVE-2023-54331 affects Getoutline Outline. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-54331?

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.

Does CVE-2023-54331 have an EU (EUVD) identifier?

Yes. CVE-2023-54331 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-2597.

When was CVE-2023-54331 published?

CVE-2023-54331 was published on 2026-01-13 and last updated on 2026-06-17.

CVE-2023-54331

CVE-2023-54331 is a high-severity vulnerability in Getoutline Outline with a CVSS 3.x base score of 7.8. 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-428.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v4: 8.5
EPSS exploit prediction: 0% (10th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-2597
Weakness: CWE-428
Affected product: Getoutline Outline
Published: 2026-01-13
Last modified: 2026-06-17

Description

Outline 1.6.0 contains an unquoted service path vulnerability that allows local attackers to potentially execute arbitrary code with elevated system privileges. Attackers can exploit the unquoted service path in the OutlineService executable to inject malicious code that will be executed with LocalSystem permissions.

Frequently asked questions

What is CVE-2023-54331?: Outline 1.6.0 contains an unquoted service path vulnerability that allows local attackers to potentially execute arbitrary code with elevated system privileges. Attackers can exploit the unquoted service path in the OutlineService executable to inject malicious code that will be executed with LocalSystem permissions.
How severe is CVE-2023-54331?: CVE-2023-54331 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-54331 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (10th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-54331?: CVE-2023-54331 affects Getoutline Outline. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-54331?: 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.
Does CVE-2023-54331 have an EU (EUVD) identifier?: Yes. CVE-2023-54331 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-2597.
When was CVE-2023-54331 published?: CVE-2023-54331 was published on 2026-01-13 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:getoutline:outline:-:*:*:*:*:*:*:*

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