How severe is CVE-2025-63647?

CVE-2025-63647 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2025-63647 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (27th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-63647?

CVE-2025-63647 affects Owntone Owntone Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-63647?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2025-63647 have an EU (EUVD) identifier?

Yes. CVE-2025-63647 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-3335.

When was CVE-2025-63647 published?

CVE-2025-63647 was published on 2026-01-20 and last updated on 2026-06-17.

CVE-2025-63647

CVE-2025-63647 is a high-severity vulnerability in Owntone Owntone Server with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-476.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 0% (27th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-3335
Weakness: CWE-476
Affected product: Owntone Owntone Server
Published: 2026-01-20
Last modified: 2026-06-17

Description

A NULL pointer dereference in the parse_meta function (src/httpd_daap.c) of owntone-server commit 334beb allows attackers to cause a Denial of Service (DoS) via sending a crafted DAAP request to the server.

Frequently asked questions

What is CVE-2025-63647?: A NULL pointer dereference in the parse_meta function (src/httpd_daap.c) of owntone-server commit 334beb allows attackers to cause a Denial of Service (DoS) via sending a crafted DAAP request to the server.
How severe is CVE-2025-63647?: CVE-2025-63647 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2025-63647 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (27th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-63647?: CVE-2025-63647 affects Owntone Owntone Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-63647?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2025-63647 have an EU (EUVD) identifier?: Yes. CVE-2025-63647 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-3335.
When was CVE-2025-63647 published?: CVE-2025-63647 was published on 2026-01-20 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:owntone:owntone_server:*:*:*:*:*:*:*:*

More vulnerabilities in Owntone Owntone Server

CVE-2021-38383 — Critical (CVSS 9.8): OwnTone (aka owntone-server) through 28.1 has a use-after-free in net_bind() in misc.c.
CVE-2025-63648 — High (CVSS 7.5): A NULL pointer dereference in the dacp_reply_playqueueedit_move function (src/httpd_dacp.c) of owntone-server commit…
CVE-2025-57156 — High (CVSS 7.5): NULL pointer dereference in the dacp_reply_playqueueedit_clear function in src/httpd_dacp.c in owntone-server through…
CVE-2025-57155 — High (CVSS 7.5): NULL pointer dereference in the daap_reply_groups function in src/httpd_daap.c in owntone-server through commit 5e6f19a…

All CVEs affecting Owntone Owntone Server →

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