How severe is CVE-2025-6669?

CVE-2025-6669 has a CVSS 3.x base score of 3.7, rated low severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2025-6669 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.

How do I fix CVE-2025-6669?

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

Does CVE-2025-6669 have an EU (EUVD) identifier?

Yes. CVE-2025-6669 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-19165.

When was CVE-2025-6669 published?

CVE-2025-6669 was published on 2025-06-25 and last updated on 2026-06-17.

CVE-2025-6669

CVE-2025-6669 is a low-severity vulnerability with a CVSS 3.x base score of 3.7. 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-320.

Key facts

Severity: Low (CVSS 3.x base score 3.7)
CVSS v2: 2.6
CVSS v4: 2.9
EPSS exploit prediction: 0% (27th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-19165
Weakness: CWE-320
Published: 2025-06-25
Last modified: 2026-06-17

Description

A vulnerability was found in gooaclok819 sublinkX up to 1.8. It has been declared as problematic. This vulnerability affects unknown code of the file middlewares/jwt.go. The manipulation with the input sublink leads to use of hard-coded cryptographic key . The attack can be initiated remotely. The complexity of an attack is rather high. The exploitation appears to be difficult. The exploit has been disclosed to the public and may be used. Upgrading to version 1.9 is able to address this issue. The patch is identified as 778d26aef723daa58df98c8060c43f5bf5d1b10b. It is recommended to upgrade the affected component.

Frequently asked questions

What is CVE-2025-6669?: A vulnerability was found in gooaclok819 sublinkX up to 1.8. It has been declared as problematic. This vulnerability affects unknown code of the file middlewares/jwt.go. The manipulation with the input sublink leads to use of hard-coded cryptographic key . The attack can be initiated remotely. The complexity of an attack is rather high. The exploitation appears to be difficult. The exploit has been disclosed to the public and may be used. Upgrading to version 1.9 is able to address this issue. The patch is identified as 778d26aef723daa58df98c8060c43f5bf5d1b10b. It is recommended to upgrade the affected component.
How severe is CVE-2025-6669?: CVE-2025-6669 has a CVSS 3.x base score of 3.7, rated low severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2025-6669 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.
How do I fix CVE-2025-6669?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-6669 have an EU (EUVD) identifier?: Yes. CVE-2025-6669 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-19165.
When was CVE-2025-6669 published?: CVE-2025-6669 was published on 2025-06-25 and last updated on 2026-06-17.

References

Other CWE-320 vulnerabilities

CVE-2016-10467 — Critical (CVSS 9.8): In Android before 2018-04-05 or earlier security patch level on Qualcomm Snapdragon Automobile and Snapdragon Mobile SD…
CVE-2016-10421 — Critical (CVSS 9.8): In Android before 2018-04-05 or earlier security patch level on Qualcomm Snapdragon Mobile and Snapdragon Wear MDM9206,…
CVE-2018-0124 — Critical (CVSS 9.8): A vulnerability in Cisco Unified Communications Domain Manager could allow an unauthenticated, remote attacker to…
CVE-2015-0936 — Critical (CVSS 9.8): Ceragon FibeAir IP-10 have a default SSH public key in the authorized_keys file for the mateidu user, which allows…
CVE-2015-4166 — Critical (CVSS 9.8): Cloudera Key Trustee Server before 5.4.3 does not store keys synchronously, which might allow attackers to have…
CVE-2024-36391 — Critical (CVSS 9.1): MileSight DeviceHub - CWE-320: Key Management Errors may allow Authentication Bypass and Man-In-The-Middle Traffic

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