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Vulnerability record · CVE-2025-63648 · published 20 January 2026

CVE-2025-63648: Owntone server null pointer dereference vulnerability

OOwntone · Owntone Server

A NULL pointer dereference in the dacp_reply_playqueueedit_move function (src/httpd_dacp.c) of owntone-server commit b7e385f allows attackers to cause a Denial of Service (DoS) via sending a crafted DACP request to the server.

7.5 CVSS 3.1 High EPSS 0.38% · top 70.9% CWE-476 · NULL pointer dereference
7.5CVSS 3.1 base score
0.38%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
3References
17 Jun 2026Last modified by NVD

Description

A NULL pointer dereference in the dacp_reply_playqueueedit_move function (src/httpd_dacp.c) of owntone-server commit b7e385f allows attackers to cause a Denial of Service (DoS) via sending a crafted DACP request to the server.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/archersec/security-advisories/blob/master/owntone-server/owntone-server-advisory-2025.md PatchThird Party Advisory
https://github.com/owntone/owntone-server/commit/5f526c7a7e08c567a5c72421d74a79dafdd07621 Patch
https://github.com/owntone/owntone-server/issues/1933 Issue TrackingPatch

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2021-38383Owntone server use after free vulnerabilityOwnTone (aka owntone-server) through 28.1 has a use-after-free in net_bind() in misc.c.EPSS 1.2%7.5CVE-2025-63647Owntone server null pointer dereference vulnerabilityA NULL pointer dereference in the parse_meta function (src/httpd_daap.c) of owntone-server commit 334beb allows attackers to cause a Denial of Servic…EPSS 0.41%7.5CVE-2025-57155Owntone server null pointer dereference vulnerabilityNULL pointer dereference in the daap_reply_groups function in src/httpd_daap.c in owntone-server through commit 5e6f19a (newer commit after version 2…EPSS 0.39%7.5CVE-2025-57156Owntone server null pointer dereference vulnerabilityNULL pointer dereference in the dacp_reply_playqueueedit_clear function in src/httpd_dacp.c in owntone-server through commit 6d604a1 (newer commit af…EPSS 0.50%6.2CVE-2026-21525Windows Remote Access Connection Manager null pointer dereference DoSWindows Remote Access Connection Manager contains a null pointer dereference (CWE-476) that lets an unauthorized attacker deny service locally. The f…KEVEPSS 4.8%analysed

Source: NIST National Vulnerability Database (record CVE-2025-63648), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.