CVE-2025-59348Network attack vector

Peer denial of service via untracked traffic

Published Sep 17, 2025 · Updated Sep 17, 2025

Use of an uninitialized variable in dragonflyoss Dragonfly before 2.1.0 allows remote attackers to interrupt peers via task processing. processPieceFromSource tests the zero-valued variable n instead of result.Size, so AddTraffic never updates the task’s usedTraffic metadata. Exploitation requires a peer to process a task; failed traffic accounting misapplies rate limiting, and the sources identify peer denial of service without specifying a crash or hang.

CVSS severity7.5
High
EPSS probability0.36%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use of an uninitialized variable in dragonflyoss Dragonfly before 2.1.0 allows remote attackers to interrupt peers via task processing. processPieceFromSource tests the zero-valued variable n instead of result.Size, so AddTraffic never updates the task’s usedTraffic metadata. Exploitation requires a peer to process a task; failed traffic accounting misapplies rate limiting, and the sources identify peer denial of service without specifying a crash or hang.

The record

CVE
CVE-2025-59348
Published
Sep 17, 2025
Updated
Sep 17, 2025
Vendor
DragonflyDB
Product
Dragonfly
Classifications
CWE-457, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 17, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 17, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 2.1.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

DragonflyDB · Dragonflyversion=< 2.1.0

Published CVSS scores

5.5GitHub, Inc.CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-457Use of Uninitialized Variable
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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