Heap overflow in GStreamer rtpL16depay allows remote code execution
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.0 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-122 and the CVSS impact.
Summary
GStreamer is affected at commit 5903987091bb25e4f549331032cd2e3494cf8dae. The rtpL16depay RTP payload element does not validate the length of user-supplied data before copying it to a heap-based buffer (CWE-122). A remote attacker can execute arbitrary code in the context of the current process, but interaction with the library is required.
Written with Claude Haiku 5.5 from the sources below · 2026-11-06
Description from the CNA
GStreamer rtpL16depay Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of GStreamer. Interaction with this library is required to exploit this vulnerability but attack vectors may vary depending on the implementation. The specific flaw exists within the processing of RTP payload elements. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-31143.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
The sources list no fixed version for GStreamer. Red Hat lists Red Hat Enterprise Linux 6 and Red Hat Enterprise Linux 7 as affected, with no plan available.
Written with Claude Haiku 5.5 from the sources below · 2026-11-06
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 6 | Affected | No fix yet |
| Red Hat Enterprise Linux 7 | Affected | No fix yet |
Timeline
- 2026-10-21 Threatist record created from CVE-2026-111183
- 2026-10-21 Alias added: GHSA-62fg-53h6-6f68
- 2026-10-23 CISA SSVC decision points changed
- 2026-10-23 CISA SSVC decision points changed
- 2026-10-25 EPSS moved to the 50th–90th percentile
- 2026-11-03 Affected versions changed · Red Hat
- 2026-11-03 CVSS score added · Red Hat
References
Advisory 1
Other 1
More GStreamer vulnerabilities
- TI-2025-29786 In GStreamer through 1.26.1, the isomp4 plugin's qtdemux_parse_trak function may read… CVSS 3.1HIGH 8.1
- TI-2024-31895 GHSL-2024-117: GStreamer has an out-of-bounds write in Ogg demuxer CVSS 4.0HIGH 8.6
- TI-2024-31893 GHSL-2024-118: GStreamer has a null pointer dereference in gst_gdk_pixbuf_dec_flush CVSS 4.0HIGH 8.6
- TI-2024-31887 GHSL-2024-116: Stack-buffer overflow in gst_opus_dec_parse_header CVSS 4.0HIGH 8.6
- TI-2024-31829 GHSL-2024-197: GStreamer uses uninitialized stack memory in Matroska/WebM demuxer CVSS 4.0HIGH 8.6
- TI-2024-31828 GHSL-2024-195: GStreamer has an OOB-write in convert_to_s334_1a CVSS 4.0HIGH 8.6
Sources
- CVE-2026-111183 · CVE Program
- CVE-2026-111183 · NVD
- FIRST EPSS
- GHSA-62fg-53h6-6f68 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-111183 · Red Hat security data · CC BY 4.0
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