CVE-2025-59351Network attack vector

Peer service crash via nil request dereference

Published Sep 17, 2025 · Updated Sep 17, 2025

NULL pointer dereference in dragonflyoss Dragonfly before 2.1.0 allows remote attackers to crash a peer via a crafted DownRequest. On the error path in server.Download, logging dereferences request.URL after source.NewRequestWithContext returns an error and a nil request. A malicious peer that can send dfdaemonv1.DownRequest messages can trigger a panic on the receiving peer, interrupting its service.

CVSS severity5.3
Medium
EPSS probability0.31%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL pointer dereference in dragonflyoss Dragonfly before 2.1.0 allows remote attackers to crash a peer via a crafted DownRequest. On the error path in server.Download, logging dereferences request.URL after source.NewRequestWithContext returns an error and a nil request. A malicious peer that can send dfdaemonv1.DownRequest messages can trigger a panic on the receiving peer, interrupting its service.

The record

CVE
CVE-2025-59351
Published
Sep 17, 2025
Updated
Sep 17, 2025
Vendor
DragonflyDB
Product
Dragonfly
Classifications
CWE-476, 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

5.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
2.7GitHub, 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:U

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.

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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-476NULL Pointer Dereference
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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