CVE-2026-59692
Gstreamer: gstreamer: dtls certificate subject dn stack buffer overflow in openssl_verify_callback
CVSS Score
7.5
EPSS Score
0.6%
EPSS Percentile
45th
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 | Aug 19, 2026 |
Stay Ahead of the Next One
Get instant alerts for red hat red hat enterprise linux 10
Be the first to know when new high vulnerabilities affecting red hat red hat enterprise linux 10 are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
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 10.0 Extended Update Support
All versions affected Red Hat / Red Hat Enterprise Linux 7 Extended Lifecycle Support
All versions affected Red Hat / Red Hat Enterprise Linux 8
All versions affected Red Hat / Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
All versions affected Red Hat / Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On
All versions affected Red Hat / Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support
All versions affected Red Hat / Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On
All versions affected Red Hat / Red Hat Enterprise Linux 8.8 Telecommunications Update Service
All versions affected Red Hat / Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions
All versions affected Red Hat / Red Hat Enterprise Linux 9
All versions affected Red Hat / Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions
All versions affected Red Hat / Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions
All versions affected Red Hat / Red Hat Enterprise Linux 9.6 Extended Update Support
All versions affected Red Hat / Red Hat Enterprise Linux 6
All versions affected Red Hat / Red Hat Enterprise Linux 7
All versions affected References
access.redhat.com: https://access.redhat.com/errata/RHSA-2026:47179 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:47180 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:47731 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:54658 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:54659 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:54660 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:54664 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:54665 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:54752 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:56658 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:56772 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.