How severe is CVE-2026-8364?

CVE-2026-8364 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-8364 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (22nd percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-8364?

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

Does CVE-2026-8364 have an EU (EUVD) identifier?

Yes. CVE-2026-8364 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-32641.

When was CVE-2026-8364 published?

CVE-2026-8364 was published on 2026-05-27 and last updated on 2026-06-17.

CVE-2026-8364

CVE-2026-8364 is a critical-severity vulnerability with a CVSS 3.x base score of 9.8. 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-306.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 0% (22nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-32641
Weakness: CWE-306
Published: 2026-05-27
Last modified: 2026-06-17

Description

Gladinet Triofox Cloud Server Agent Access Service (GladServerAgentService.exe) listens on TCP port 7878 and processes remote HTTP messages with URL paths starting with /resources, /status, /sysinfo, /woshome, /Settings, /schedule, or /DavCache.

Frequently asked questions

What is CVE-2026-8364?: Gladinet Triofox Cloud Server Agent Access Service (GladServerAgentService.exe) listens on TCP port 7878 and processes remote HTTP messages with URL paths starting with /resources, /status, /sysinfo, /woshome, /Settings, /schedule, or /DavCache.
How severe is CVE-2026-8364?: CVE-2026-8364 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-8364 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (22nd percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-8364?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2026-8364 have an EU (EUVD) identifier?: Yes. CVE-2026-8364 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-32641.
When was CVE-2026-8364 published?: CVE-2026-8364 was published on 2026-05-27 and last updated on 2026-06-17.

References

https://www.tenable.com/security/research/TRA-2026-45

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