A vulnerability was found in GStreamer . It has been classified as critical . Affected by this issue is the function gst_h266_parser_parse_picture_partition of the file gsth266parser.c . This manipulation causes out-of-bounds write. The identification of this vulnerability is CVE-2026-53701 . It is possible to initiate the attack remotely. There is no exploit available. Upgrading the affected component is recommended.