How severe is CVE-2025-27378?

CVE-2025-27378 has a CVSS 3.x base score of 8.6, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity low, and availability low.

Is CVE-2025-27378 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (27th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-27378?

CVE-2025-27378 affects Altium On-prem Enterprise Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-27378?

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-2025-27378 have an EU (EUVD) identifier?

Yes. CVE-2025-27378 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-4176.

When was CVE-2025-27378 published?

CVE-2025-27378 was published on 2026-01-22 and last updated on 2026-06-17.

CVE-2025-27378

CVE-2025-27378 is a high-severity vulnerability in Altium On-prem Enterprise Server with a CVSS 3.x base score of 8.6. 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-20.

Key facts

Severity: High (CVSS 3.x base score 8.6)
EPSS exploit prediction: 0% (27th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-4176
Weakness: CWE-20
Affected product: Altium On-prem Enterprise Server
Published: 2026-01-22
Last modified: 2026-06-17

Description

AES contains a SQL injection vulnerability due to an inactive configuration that prevents the latest SQL parsing logic from being applied. When this configuration is not enabled, crafted input may be improperly handled, allowing attackers to inject and execute arbitrary SQL queries.

Frequently asked questions

What is CVE-2025-27378?: AES contains a SQL injection vulnerability due to an inactive configuration that prevents the latest SQL parsing logic from being applied. When this configuration is not enabled, crafted input may be improperly handled, allowing attackers to inject and execute arbitrary SQL queries.
How severe is CVE-2025-27378?: CVE-2025-27378 has a CVSS 3.x base score of 8.6, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity low, and availability low.
Is CVE-2025-27378 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (27th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-27378?: CVE-2025-27378 affects Altium On-prem Enterprise Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-27378?: 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-2025-27378 have an EU (EUVD) identifier?: Yes. CVE-2025-27378 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-4176.
When was CVE-2025-27378 published?: CVE-2025-27378 was published on 2026-01-22 and last updated on 2026-06-17.

References

https://www.altium.com/platform/security-compliance/security-advisories

Affected products (1)

cpe:2.3:a:altium:on-prem_enterprise_server:*:*:*:*:*:*:*:*

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