How severe is CVE-2025-59347?

CVE-2025-59347 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability high.

Is CVE-2025-59347 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (5th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-59347?

CVE-2025-59347 affects Linuxfoundation Dragonfly. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-59347?

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

Does CVE-2025-59347 have an EU (EUVD) identifier?

Yes. CVE-2025-59347 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-29776.

When was CVE-2025-59347 published?

CVE-2025-59347 was published on 2025-09-17 and last updated on 2026-06-17.

CVE-2025-59347

CVE-2025-59347 is a medium-severity vulnerability in Linuxfoundation Dragonfly with a CVSS 3.x base score of 6.5. 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-295.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v4: 2.7
EPSS exploit prediction: 0% (5th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-29776
Weakness: CWE-295
Affected product: Linuxfoundation Dragonfly
Published: 2025-09-17
Last modified: 2026-06-17

Description

Dragonfly is an open source P2P-based file distribution and image acceleration system. Prior to 2.1.0, The Manager disables TLS certificate verification in HTTP clients. The clients are not configurable, so users have no way to re-enable the verification. A Manager processes dozens of preheat jobs. An adversary performs a network-level Man-in-the-Middle attack, providing invalid data to the Manager. The Manager preheats with the wrong data, which later causes a denial of service and file integrity problems. This vulnerability is fixed in 2.1.0.

Frequently asked questions

What is CVE-2025-59347?: Dragonfly is an open source P2P-based file distribution and image acceleration system. Prior to 2.1.0, The Manager disables TLS certificate verification in HTTP clients. The clients are not configurable, so users have no way to re-enable the verification. A Manager processes dozens of preheat jobs. An adversary performs a network-level Man-in-the-Middle attack, providing invalid data to the Manager. The Manager preheats with the wrong data, which later causes a denial of service and file integrity problems. This vulnerability is fixed in 2.1.0.
How severe is CVE-2025-59347?: CVE-2025-59347 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability high.
Is CVE-2025-59347 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (5th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-59347?: CVE-2025-59347 affects Linuxfoundation Dragonfly. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-59347?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-59347 have an EU (EUVD) identifier?: Yes. CVE-2025-59347 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-29776.
When was CVE-2025-59347 published?: CVE-2025-59347 was published on 2025-09-17 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:linuxfoundation:dragonfly:*:*:*:*:*:go:*:*

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