How severe is CVE-2025-6279?

CVE-2025-6279 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2025-6279 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (37th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-6279?

CVE-2025-6279 affects Upsonic. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-6279?

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

Does CVE-2025-6279 have an EU (EUVD) identifier?

Yes. CVE-2025-6279 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-18696.

When was CVE-2025-6279 published?

CVE-2025-6279 was published on 2025-06-19 and last updated on 2026-06-17.

CVE-2025-6279

CVE-2025-6279 is a medium-severity vulnerability in Upsonic with a CVSS 3.x base score of 5.5. 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-502.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
CVSS v2: 5.2
CVSS v4: 2.0
EPSS exploit prediction: 0% (37th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-18696
Weakness: CWE-502
Affected product: Upsonic
Published: 2025-06-19
Last modified: 2026-06-17

Description

A vulnerability, which was classified as critical, has been found in Upsonic up to 0.55.6. This issue affects the function cloudpickle.loads of the file /tools/add_tool of the component Pickle Handler. The manipulation leads to deserialization. The exploit has been disclosed to the public and may be used.

Frequently asked questions

What is CVE-2025-6279?: A vulnerability, which was classified as critical, has been found in Upsonic up to 0.55.6. This issue affects the function cloudpickle.loads of the file /tools/add_tool of the component Pickle Handler. The manipulation leads to deserialization. The exploit has been disclosed to the public and may be used.
How severe is CVE-2025-6279?: CVE-2025-6279 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2025-6279 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (37th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-6279?: CVE-2025-6279 affects Upsonic. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-6279?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-6279 have an EU (EUVD) identifier?: Yes. CVE-2025-6279 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-18696.
When was CVE-2025-6279 published?: CVE-2025-6279 was published on 2025-06-19 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:upsonic:upsonic:*:*:*:*:*:*:*:*

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