7.5

CVE-2025-59348: dragonflyoss dragonfly Use of Uninitialized Variable

CVSS: 7.5v3.1HighAnalyzed
AliasesGHSA-2qgr-gfvj-qpcrGO-2025-3963
Published 17-09-2025Last modified 17-09-2025
Open JSON

Vulnerability summary

CVE-2025-59348 is a high (CVSS 7.5) Use of Uninitialized Variable vulnerability in dragonflyoss dragonfly. EPSS estimates a 0.36% chance of exploitation in the next 30 days, higher than 28% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (NVD)
EPSS score
0.36%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 3 · Related 3
OPENSUSE-SU-2025:15576-1OPENSUSE-SU-2026:21483-1SUSE-SU-2025:3799-1

Timeline

  1. 17-09-2025
    PublishedVulnerability first disclosed.
  2. 17-09-2025
    Last modifiedVulnerability information updated.

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.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

0.36%

Chance of exploitation in the next 30 days

Percentile

28%

Versus all other CVEs

30-day change

0.00 pp

From 0.36% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.36%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

D7y.io/dragonfly1 product
  • v2< 2.1.0
Dragonflyoss1 product
Github.com/dragonflyoss1 product
  • dragonfly< 2.1.0 | All versions (No fix recorded)
Linuxfoundation1 product

4 vendors · 4 products

References

5 links