How severe is CVE-2025-28238?

CVE-2025-28238 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-2025-28238 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (34th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2025-28238?

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-2025-28238 have an EU (EUVD) identifier?

Yes. CVE-2025-28238 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-11887.

When was CVE-2025-28238 published?

CVE-2025-28238 was published on 2025-04-18 and last updated on 2026-06-17.

CVE-2025-28238

CVE-2025-28238 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-384.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 0% (34th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-11887
Weakness: CWE-384
Published: 2025-04-18
Last modified: 2026-06-17

Description

Improper session management in Elber REBLE310 Firmware v5.5.1.R , Equipment Model: REBLE310/RX10/4ASI allows attackers to execute a session hijacking attack.

Frequently asked questions

What is CVE-2025-28238?: Improper session management in Elber REBLE310 Firmware v5.5.1.R , Equipment Model: REBLE310/RX10/4ASI allows attackers to execute a session hijacking attack.
How severe is CVE-2025-28238?: CVE-2025-28238 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-2025-28238 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (34th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2025-28238?: 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-2025-28238 have an EU (EUVD) identifier?: Yes. CVE-2025-28238 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-11887.
When was CVE-2025-28238 published?: CVE-2025-28238 was published on 2025-04-18 and last updated on 2026-06-17.

References

https://github.com/shiky8/my--cve-vulnerability-research/tree/main/CVE-2025-28238

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