How severe is CVE-2025-59348?

CVE-2025-59348 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2025-59348 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-59348?

CVE-2025-59348 affects Linuxfoundation Dragonfly. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-59348?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2025-59348 have an EU (EUVD) identifier?

Yes. CVE-2025-59348 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-29770.

When was CVE-2025-59348 published?

CVE-2025-59348 was published on 2025-09-17 and last updated on 2026-06-17.

CVE-2025-59348

CVE-2025-59348 is a high-severity vulnerability in Linuxfoundation Dragonfly with a CVSS 3.x base score of 7.5. 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-457.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v4: 5.5
EPSS exploit prediction: 0% (25th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-29770
Weakness: CWE-457
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 processPieceFromSource method does not update the structure’s usedTraffic field, because an uninitialized variable n is used as a guard to the AddTraffic method call, instead of the result.Size variable. A task is processed by a peer. The usedTraffic metadata is not updated during the processing. Rate limiting is incorrectly applied, leading to a denial-of-service condition for the peer. This vulnerability is fixed in 2.1.0.

Frequently asked questions

What is CVE-2025-59348?: Dragonfly is an open source P2P-based file distribution and image acceleration system. Prior to 2.1.0, the processPieceFromSource method does not update the structure’s usedTraffic field, because an uninitialized variable n is used as a guard to the AddTraffic method call, instead of the result.Size variable. A task is processed by a peer. The usedTraffic metadata is not updated during the processing. Rate limiting is incorrectly applied, leading to a denial-of-service condition for the peer. This vulnerability is fixed in 2.1.0.
How severe is CVE-2025-59348?: CVE-2025-59348 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2025-59348 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-59348?: CVE-2025-59348 affects Linuxfoundation Dragonfly. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-59348?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2025-59348 have an EU (EUVD) identifier?: Yes. CVE-2025-59348 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-29770.
When was CVE-2025-59348 published?: CVE-2025-59348 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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