CVE-2026-59692
Gstreamer: gstreamer: dtls certificate subject dn stack buffer overflow in openssl_verify_callback
CVSS Score
7.5
EPSS Score
0.0%
EPSS Percentile
0th
A stack buffer overflow vulnerability was found in GStreamer's DTLS plugin. During a DTLS handshake, the peer certificate Subject Distinguished Name is printed into a fixed-size 2048-byte stack buffer without bounds checking. A remote unauthenticated attacker can send a certificate with an oversized Subject DN that exceeds the buffer, causing a stack buffer overflow and process crash, resulting in denial of service.
| CWE | CWE-121 |
| Vendor | red hat |
| Product | red hat enterprise linux 10 |
| Published | Jul 9, 2026 |
| Last Updated | Jul 9, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected Versions
Red Hat / Red Hat Enterprise Linux 10
All versions affected Red Hat / Red Hat Enterprise Linux 6
All versions affected Red Hat / Red Hat Enterprise Linux 7
All versions affected Red Hat / Red Hat Enterprise Linux 7
All versions affected Red Hat / Red Hat Enterprise Linux 8
All versions affected Red Hat / Red Hat Enterprise Linux 9
All versions affected References
access.redhat.com: https://access.redhat.com/security/cve/CVE-2026-59692 bugzilla.redhat.com: https://bugzilla.redhat.com/show_bug.cgi?id=2497344 gitlab.freedesktop.org: https://gitlab.freedesktop.org/gstreamer/gstreamer-security/-/merge_requests/99 gitlab.freedesktop.org: https://gitlab.freedesktop.org/gstreamer/gstreamer/-/work_items/5172
Credits
Red Hat would like to thank Clouditera Security (Clouditera), NSFOCUS (NSFOCUS), and Z.ai Security (Z.ai) for reporting this issue.