https://seclists.org/oss-sec/2026/q2/913: CVE-2025-55661: Heap-based Buffer Overflow in GPAC/MP4Box via gf_opus_parse_packet_header on crafted MP4 file with malformed Opus packet
Published Jun 13, 2026
·Updated
Affected Software
1 affected component
Gpac GPAC (MP4Box)<ff8249a407685d00ceb5f4d2a798b9cad195140e
Frequently Asked Questions
1
What is the severity of CVE-2025-55661?
The severity of CVE-2025-55661 is rated as Medium with a CVSS score of 5.4.
2
How do I fix CVE-2025-55661?
To fix CVE-2025-55661, update GPAC (MP4Box) to the latest version that includes the fix commit ff8249a407685d00ceb5f4d2a798b9cad195140e.
3
What type of vulnerability is CVE-2025-55661?
CVE-2025-55661 is a heap-based buffer overflow vulnerability that can be triggered by crafted MP4 files with malformed Opus packets.
4
What products are affected by CVE-2025-55661?
The products affected by CVE-2025-55661 are all versions of GPAC (MP4Box) prior to the fix commit.
5
What is the impact of CVE-2025-55661?
The impact of CVE-2025-55661 includes possible memory corruption, which may lead to application crashes or execution of arbitrary code.