How severe is CVE-2025-21551?

CVE-2025-21551 has a CVSS 3.x base score of 6.0, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability high.

Is CVE-2025-21551 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (8th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-21551?

CVE-2025-21551 affects Oracle Solaris. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-21551?

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

Does CVE-2025-21551 have an EU (EUVD) identifier?

Yes. CVE-2025-21551 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-2540.

When was CVE-2025-21551 published?

CVE-2025-21551 was published on 2025-01-21 and last updated on 2026-06-17.

CVE-2025-21551

CVE-2025-21551 is a medium-severity vulnerability in Oracle Solaris with a CVSS 3.x base score of 6.0. 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-732.

Key facts

Severity: Medium (CVSS 3.x base score 6.0)
EPSS exploit prediction: 0% (8th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-2540
Weakness: CWE-732
Affected product: Oracle Solaris
Published: 2025-01-21
Last modified: 2026-06-17

Description

Vulnerability in the Oracle Solaris product of Oracle Systems (component: File system). The supported version that is affected is 11. Easily exploitable vulnerability allows high privileged attacker with logon to the infrastructure where Oracle Solaris executes to compromise Oracle Solaris. Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all Oracle Solaris accessible data and unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Oracle Solaris. CVSS 3.1 Base Score 6.0 (Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H).

Frequently asked questions

What is CVE-2025-21551?: Vulnerability in the Oracle Solaris product of Oracle Systems (component: File system). The supported version that is affected is 11. Easily exploitable vulnerability allows high privileged attacker with logon to the infrastructure where Oracle Solaris executes to compromise Oracle Solaris. Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all Oracle Solaris accessible data and unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Oracle Solaris. CVSS 3.1 Base Score 6.0 (Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H).
How severe is CVE-2025-21551?: CVE-2025-21551 has a CVSS 3.x base score of 6.0, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability high.
Is CVE-2025-21551 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (8th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-21551?: CVE-2025-21551 affects Oracle Solaris. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-21551?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-21551 have an EU (EUVD) identifier?: Yes. CVE-2025-21551 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-2540.
When was CVE-2025-21551 published?: CVE-2025-21551 was published on 2025-01-21 and last updated on 2026-06-17.

References

https://www.oracle.com/security-alerts/cpujan2025.html

Affected products (1)

cpe:2.3:o:oracle:solaris:11:*:*:*:*:*:*:*

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