How severe is CVE-2026-23927?

CVE-2026-23927 has a CVSS 4.0 base score of 5.1, rated medium severity.

Is CVE-2026-23927 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (14th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-23927?

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

Does CVE-2026-23927 have an EU (EUVD) identifier?

Yes. CVE-2026-23927 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-27528.

When was CVE-2026-23927 published?

CVE-2026-23927 was published on 2026-05-06 and last updated on 2026-06-17.

CVE-2026-23927

CVE-2026-23927 is a medium-severity vulnerability with a CVSS 4.0 base score of 5.1. 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-522.

Key facts

Severity: Medium (CVSS 4.0 base score 5.1)
EPSS exploit prediction: 0% (14th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-27528
Weakness: CWE-522
Published: 2026-05-06
Last modified: 2026-06-17

Description

A user able to connect to Agent 2 can inject an Oracle TNS connection string via the 'service' parameter. This can lead to Agent 2 connecting to an attacker-controlled server and leaking Oracle database credentials if they are saved in a named session.

Frequently asked questions

What is CVE-2026-23927?: A user able to connect to Agent 2 can inject an Oracle TNS connection string via the 'service' parameter. This can lead to Agent 2 connecting to an attacker-controlled server and leaking Oracle database credentials if they are saved in a named session.
How severe is CVE-2026-23927?: CVE-2026-23927 has a CVSS 4.0 base score of 5.1, rated medium severity.
Is CVE-2026-23927 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (14th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-23927?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-23927 have an EU (EUVD) identifier?: Yes. CVE-2026-23927 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-27528.
When was CVE-2026-23927 published?: CVE-2026-23927 was published on 2026-05-06 and last updated on 2026-06-17.

References

https://support.zabbix.com/browse/ZBX-27759

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