What is CVE-2025-59351?

CVE-2025-59351 is a medium-severity vulnerability in Dragonflyoss Dragonfly, classified under NULL Pointer Dereference. CVSS score: 5.3/10. Published 2025-09-17.

How severe is CVE-2025-59351?

Medium severity. CVSS v3 base score is 5.3 out of 10.

NULL pointer dereference in Dragonflyoss Dragonfly

CVE-2025-59351

Dragonfly is an open source P2P-based file distribution and image acceleration system. Prior to 2.1.0, the first return value of a function is dereferenced even when the function returns an error. This can result in a nil dereference, and cause code to panic. This vulnerability is fixed in 2.1.0.

Published 2025-09-17 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.

EPSS exploit prediction

EPSS: 0.003 (24.3th percentile), scored 2026-10-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 24th percentile — 24.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Dragonflyoss Dragonfly — versions < 2.1.0
Linuxfoundation Dragonfly

Weakness classification (CWE)

CWE-476 — NULL Pointer Dereference

References

github.com/dragonflyoss/dragonfly/security/advisories/GHSA-4mhv-8rh3-4ghw (Patch, Third Party Advisory)
github.com/dragonflyoss/dragonfly/blob/main/docs/security/dragonfly-comprehensi… (Product)

Frequently asked questions

What is CVE-2025-59351?: CVE-2025-59351 is a medium-severity vulnerability in Dragonflyoss Dragonfly, classified under NULL Pointer Dereference. CVSS score: 5.3/10. Published 2025-09-17.
How severe is CVE-2025-59351?: Medium severity. CVSS v3 base score is 5.3 out of 10.