CVE-2026-85150
The vulnerability occurs while parsing an Authorization or WWW-Authenticate header that uses Digest authentication.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.49%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
A NULL pointer dereference flaw was found in GStreamer's RTSP support library. The vulnerability occurs while parsing an Authorization or WWW-Authenticate header that uses Digest authentication. Specially crafted whitespace placement around a parameter's terminator can cause an internal length calculation to underflow, leading to a crash of the process parsing the header. On an RTSP server this can be triggered by a remote, unauthenticated attacker sending a single malformed request when the server has authentication enabled; the same flaw can also be triggered against an RTSP client by a malicious or compromised RTSP server. Successful exploitation results in a denial of service (application crash) and has no confirmed impact on confidentiality or integrity.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.49% probability · 41th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-476
- Source
- secalert@redhat.com
References
- https://access.redhat.com/errata/RHSA-2026:66460
- https://access.redhat.com/security/cve/CVE-2026-85150
- https://bugzilla.redhat.com/show_bug.cgi?id=2527936
- https://gitlab.freedesktop.org/gstreamer/gstreamer-security/-/merge_requests/120
- https://gitlab.freedesktop.org/gstreamer/gstreamer/-/blob/main/subprojects/gst-plugins-base/gst-libs/gst/rtsp/gstrtspmessage.c#L1408
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.