{"id":"CVE-2026-53704","title":"A flaw was found in GStreamer's RealMedia demuxer in the gst-plugins-ugly package","summary":"A flaw was found in GStreamer's RealMedia demuxer in the gst-plugins-ugly package. When processing a RealMedia file containing a specially crafted FILEINFO metadata section, the demuxer parses variable-name and variable-value pairs using…","severity":"high","cvss":7.1,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H","cwe":["CWE-125"],"vendor":"Red Hat","product":"gstreamer1-plugins-ugly-free","affected":["gstreamer1-plugins-ugly-free (all versions)","gstreamer1-plugins-ugly-free (all versions)","gstreamer1-plugins-ugly-free (all versions)","gstreamer1-plugins-ugly-free (all versions)","gstreamer1-plugins-ugly-free","gstreamer1-plugins-ugly-free"],"published":"2026-06-15","updated":"2026-09-08","sourceUpdated":"2026-09-08T23:17:25.130","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-53704","references":[{"url":"https://access.redhat.com/errata/RHSA-2026:36673","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:36674","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:50688","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:50691","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/security/cve/CVE-2026-53704","label":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2487614","label":"secalert@redhat.com"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-53704.json"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-53704"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-53704"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-06-16T12:46:47.069346Z"},"epss":0.00245,"epssPercentile":0.15955,"ingestedAt":"2026-09-08T23:13:54.647Z","patched":["enterprise_linux_appstream_eus_v_10_0","enterprise_linux_appstream_v_10","enterprise_linux_appstream_eus_v_9_6","enterprise_linux_appstream_v_9"],"slug":"CVE-2026-53704","body":"## Overview\n\nA flaw was found in GStreamer's RealMedia demuxer in the gst-plugins-ugly package. When processing a RealMedia file containing a specially crafted FILEINFO metadata section, the demuxer parses variable-name and variable-value pairs using re_skip_pascal_string() without validating that offsets remain within the mapped buffer. Additionally, the element count controlling the parsing loop is read from attacker-controlled data without validation, which can cause an infinite loop. A crafted RealMedia file can cause the application to crash, hang, or potentially read limited adjacent memory contents.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **RHSA-2026:50688** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream EUS (v. 10.0) · released 2026-08-05 · [advisory](https://access.redhat.com/errata/RHSA-2026:50688)\n- **RHSA-2026:36673** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 10) · released 2026-07-08 · [advisory](https://access.redhat.com/errata/RHSA-2026:36673)\n- **RHSA-2026:50691** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream EUS (v.9.6) · released 2026-08-05 · [advisory](https://access.redhat.com/errata/RHSA-2026:50691)\n- **RHSA-2026:36674** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 9) · released 2026-07-08 · [advisory](https://access.redhat.com/errata/RHSA-2026:36674)","depth":"twilight","depthScore":39,"depthScoreParts":{"impact":39.1,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}