CVE-2026-19389
Gstreamer: gstreamer1-plugins-ugly-free: gstreamer: integer overflow/underflow in asfdemux bounds checks leading to out-of-bounds read
No known exploitation. EPSS puts it in the 46th percentile. Only a workaround so far.
What to do
No fixed build is published yet. The vendor describes a workaround.
What it is
From the CVE record
Multiple integer overflow and underflow vulnerabilities were found in the GStreamer gst-plugins-ugly ASF demuxer (asfdemux) when parsing header objects from crafted ASF, WMV, or WMA files. Insufficient validation of attacker-controlled length and size values can bypass bounds checks and cause out-of-bounds heap reads. This can result in application crash, denial of service, or limited information disclosure when untrusted media is processed.
In plain language
No plain-language summary for this CVE yet.
Exploitation
Where each signal puts this CVE on the scale from published to confirmed exploited.
- CISA KEV
Not in the catalog. CISA has not confirmed exploitation.
- Public exploits
No public exploit or proof of concept found in the sources we track.
- EPSS
0.6% chance of exploitation activity in the next 30 days, which ranks it in the 46th percentile of scored CVEs.
Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.
Lifecycle
20 events over 37 days, from the signal feeds we watch.
- Workaround availableworkaround available, record updated, record updated
- Workaround availablerecord updated
- OpenVAS check addedworkaround available, record updated
- Workaround availablerecord updated
- Workaround availablerecord updated
- Workaround availableworkaround available, published, weakness classified, att&ck mapped, record updated, record updated
Affected products
- Red Hat Enterprise Linux 10Operating Systems / linux-distro
- Red Hat Enterprise Linux 10.0 Extended Update SupportOperating Systems / linux-distro
- Red Hat Enterprise Linux 9.2 Update Services for SAP SolutionsOperating Systems / linux-distro
- Red Hat Enterprise Linux 9.4 Update Services for SAP SolutionsOperating Systems / linux-distro
- Red Hat Enterprise Linux 9.6 Extended Update SupportOperating Systems / linux-distro
And 3 more affected products. See all after sign-in
Technical detail
CVSS 3.1 vector
Open in the CVSS calculatorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
Scored 7.1 by NVD.
How it is reached
- Attack Vector NetworkExploitable remotely over the network without any special conditions
- Attack Complexity LowNo special conditions — the attack can be reliably reproduced
- Privileges Required NoneNo authentication required — anyone can exploit this
- User Interaction RequiredA user must click a link, open a file, or perform some action
Scope
- Scope UnchangedImpact is limited to the vulnerable component itself
Impact if exploited
- Confidentiality LowSome restricted information is disclosed, but limited in scope
- Integrity NoneNo integrity impact
- Availability HighTotal denial of service — the component is completely unavailable
Weaknesses
ATT&CK techniques
Mapped from the weaknesses above (CWE to ATT&CK), not observed in attacks.
- Initial AccessT1190Exploit Public-Facing Applicationmedium confidence
Sources
References in the record
- access.redhat.com/errata/RHSA-2026:55435
- access.redhat.com/errata/RHSA-2026:55865
- access.redhat.com/errata/RHSA-2026:67882
And 8 more references. See all after sign-in
Watch the software you run.
My Stack ranks new CVEs for your products by real-world exploitation, so the next serious one reaches you without reading every advisory.
We'll flag the next CVE, public exploit or patch for Red Hat, not every advisory.
A free account adds
- The full version matrix and every affected product
- Exploit links, proofs of concept and Metasploit modules
- Email alerts for the products you watch
- The same data over REST API, MCP and CLI