ffmpeg: out-of-bounds read due to insufficiently padded extradata in the MOV parsing path
Published Sep 13, 2026
5.5
MEDIUMCVSS 3.1
EPSS 0.15%
Description
FFmpeg before 9.0 has an out-of-bounds read because there is insufficiently padded extradata in the MOV parsing path in mov_read_iacb in libavformat/mov.c.
Affected products
-
- Version 0StatusaffectedConstraints<9.0
- Version
No data.
No data.
Red Hat Enterprise Linux AI (RHEL AI) 3
ffmpeg
Not affected
Red Hat Enterprise Linux AI (RHEL AI) 3
rhelai3/bootc-aws-cuda-rhel9
Not affected
Red Hat Enterprise Linux AI (RHEL AI) 3
rhelai3/bootc-azure-cuda-rhel9
Not affected
Red Hat Enterprise Linux AI (RHEL AI) 3
rhelai3/bootc-azure-rocm-rhel9
Not affected
Red Hat Enterprise Linux AI (RHEL AI) 3
rhelai3/bootc-cuda-rhel9
Not affected
Red Hat Enterprise Linux AI (RHEL AI) 3
rhelai3/bootc-gcp-cuda-rhel9
Not affected
Red Hat Enterprise Linux AI (RHEL AI) 3
rhelai3/bootc-rocm-rhel9
Not affected
Red Hat OpenShift AI (RHOAI)
rhoai/odh-vllm-gaudi-rhel9
Fix deferred
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux AI (RHEL AI) 3 | ffmpeg | Not affected | n/a |
| Red Hat Enterprise Linux AI (RHEL AI) 3 | rhelai3/bootc-aws-cuda-rhel9 | Not affected | n/a |
| Red Hat Enterprise Linux AI (RHEL AI) 3 | rhelai3/bootc-azure-cuda-rhel9 | Not affected | n/a |
| Red Hat Enterprise Linux AI (RHEL AI) 3 | rhelai3/bootc-azure-rocm-rhel9 | Not affected | n/a |
| Red Hat Enterprise Linux AI (RHEL AI) 3 | rhelai3/bootc-cuda-rhel9 | Not affected | n/a |
| Red Hat Enterprise Linux AI (RHEL AI) 3 | rhelai3/bootc-gcp-cuda-rhel9 | Not affected | n/a |
| Red Hat Enterprise Linux AI (RHEL AI) 3 | rhelai3/bootc-rocm-rhel9 | Not affected | n/a |
| Red Hat OpenShift AI (RHOAI) | rhoai/odh-vllm-gaudi-rhel9 | Fix deferred | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
To exploit this issue, an attacker needs to convince a user to parse a specially crafted MOV file, limiting its exposure. Furthermore, this issue can cause an application crash with no other security impact. For these reasons, this vulnerability has been rated with a moderate severity.
Red Hat mitigation
Do not parse untrusted files with the MOV demuxer in FFmpeg.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
1 other source (Red Hat) ▾
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
NoneAutomatable
NoTechnical Impact
PartialDecision
n/aAssessed Sep 14, 2026 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 4, 2026.
Score over time
Sep-Oct 2026- EPSS v5
Percentile over time
- EPSS v5
Table of values (2 key points)
Flat stretches are collapsed. Showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 4, 2026 | 0.15% (0.00155) | 4.00th | v5 (v2026.06.15) |
| Sep 14, 2026 | 0.12% (0.00116) | 1.83th | v5 (v2026.06.15) |
References (7)
- https://access.redhat.com/security/cve/CVE-2026-52297 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2532794 Issue Tracking
- https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/22988
- https://git.ffmpeg.org/gitweb/ffmpeg.git/commit/8439e0203744a30d280668fcd086f74ed5001da1
- https://github.com/Kenan-Kamel/VulnerabilitiesReference/tree/main/FFmpeg/ExtradataPadding
- https://nvd.nist.gov/vuln/detail/CVE-2026-52297
- https://www.cve.org/CVERecord?id=CVE-2026-52297
Change history (0)
No recorded changes yet.