FFmpeg 0.7.1 - 8.1.2 Out-of-Bounds Read via S/PDIF Muxer spdifenc.c
FFmpeg versions 0.7.1 through 8.1.2 contain an out-of-bounds read vulnerability in the S/PDIF muxer that allows attackers to access memory beyond buffer boundaries by supplying a crafted DTS stream with a core_size value larger than the actual packet length. Attackers can exploit the missing bounds check in the spdif_header_dts4 function by providing a malicious DTS-HD audio stream during S/PDIF re-muxing to trigger unauthorized memory reads beyond the packet buffer.
- Published
- Jul 22, 2026
- Updated
- Aug 12, 2026
- EPSS
- 0.4% · 31th percentile
- CWE
- CWE-125
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Report tools
Action score
28
Monitor
Low priority for now.
- CVSS
- 28 / 40 · 7.1 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.4%
CISA SSVC decision
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
Vulnrichment: CISA's decision-tree inputs.
CNA vs NVD score
- NVD
- —
- CNA · VulnCheck
- 7.1
- NVD has not scored this yet; the score shown is the CNA’s.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for the hundreds of thousands of vulnerabilities in the database; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpAffected systems
| Vendor | Product | CPE |
|---|---|---|
| ffmpeg | ffmpeg | cpe:2.3:a:ffmpeg:ffmpeg |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- ffmpeg ffmpeg0.7.1 and later · up to 8.1.2 inclusive
Versions reported by the vendor
Affected version ranges reported by the assigning authority (VulnCheck). Independent of NVD's CPE analysis and usually ahead of it.
FFmpeg FFmpeg
- 6f80e2765492700622596af720534cef33dd31b4affected
- 0.7.1 and later · up to and including 8.1.2affected · semver
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:12 | ffmpeg | all versions | — |
| Debian:14 | ffmpeg | before 7:9.0.2-1 | 7:9.0.2-1 |
| openSUSE:Leap 16.0 | ffmpeg-7 | before 7.1.5-160000.1.1 | 7.1.5-160000.1.1 |
| openSUSE:Tumbleweed | ffmpeg-4 | before 4.4.8-4.1 | 4.4.8-4.1 |
| openSUSE:Tumbleweed | ffmpeg-7 | before 7.1.5-2.1 | 7.1.5-2.1 |
| openSUSE:Tumbleweed | ffmpeg-8 | before 8.1.2-3.1 | 8.1.2-3.1 |
| openSUSE:Tumbleweed | ffmpeg-9 | before 9.0.1-2.1 | 9.0.1-2.1 |
| SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOS | ffmpeg-4 | before 4.4.8-150400.3.75.1 | 4.4.8-150400.3.75.1 |
| SUSE:Linux Enterprise Module for Desktop Applications 15 SP7 | ffmpeg | before 3.4.2-150200.11.79.1 | 3.4.2-150200.11.79.1 |
| SUSE:Linux Enterprise Module for Package Hub 15 SP7 | ffmpeg-4 | before 4.4.8-150600.13.55.1 | 4.4.8-150600.13.55.1 |
Same product
ffmpeg: all recordsOther highest-scoring records for the same primary product.
- CVE-2009-4637FFmpeg 0.5 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via unknown vectors that trigger45Plan
- CVE-2016-10190Heap-based buffer overflow in libavformat/http.c in FFmpeg before 2.8.10, 3.0.x before 3.0.5, 3.1.x before 3.1.6, and 3.2.x before 3.2.2 all42Plan
- CVE-2009-4634Multiple integer underflows in FFmpeg 0.5 allow remote attackers to cause a denial of service and possibly execute arbitrary code via a craf42Plan
- CVE-2009-4633vorbis_dec.c in FFmpeg 0.5 uses an assignment operator when a comparison operator was intended, which might allow remote attackers to cause 42Plan
- CVE-2016-10192Heap-based buffer overflow in ffserver.c in FFmpeg before 2.8.10, 3.0.x before 3.0.5, 3.1.x before 3.1.6, and 3.2.x before 3.2.2 allows remo41Plan
- CVE-2016-10191Heap-based buffer overflow in libavformat/rtmppkt.c in FFmpeg before 2.8.10, 3.0.x before 3.0.5, 3.1.x before 3.1.6, and 3.2.x before 3.2.2 41Plan
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| debian:ffmpeg | 7:9.0.2-1 · Debian:14 | Package registry (OSV) |
| opensuse:ffmpeg-4 | 4.4.8-4.1 · openSUSE:Tumbleweed | Package registry (OSV) |
| opensuse:ffmpeg-7 | 7.1.5-2.1 · openSUSE:Tumbleweed | Package registry (OSV) |
| opensuse:ffmpeg-8 | 8.1.2-3.1 · openSUSE:Tumbleweed | Package registry (OSV) |
| opensuse:ffmpeg-9 | 9.0.1-2.1 · openSUSE:Tumbleweed | Package registry (OSV) |
| suse:ffmpeg | 3.4.2-150200.11.79.1 · SUSE:Linux Enterprise Module for Desktop Applications 15 SP7 | Package registry (OSV) |
| suse:ffmpeg-4 | 4.4.8-150600.13.55.1 · SUSE:Linux Enterprise Module for Package Hub 15 SP7 | Package registry (OSV) |
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
- CVE-2026-30997100 days apartAn out-of-bounds read in the read_global_param() function (libavcodec/av1dec.c) of FFmpeg v8.0.1 allows attackers to cause a Denial of Servi30Monitor
- CVE-2026-7514628 days apartFFmpeg Out-of-Bounds Read in DASH Demuxer via dashdec.c28Monitor
- CVE-2026-7514728 days apartFFmpeg Out-of-Bounds Read in AV1 RTP Packetizer via rtpenc_av1.c27Monitor
- CVE-2025-69693128 days apartOut-of-bounds read in FFmpeg 8.0 and 8.0.1 RV60 video decoder (libavcodec/rv60dec.c).21Monitor
- CVE-2026-5229541 days apartFFmpeg before 9.0 has an out-of-bounds read because the copied extradata lacked required padding before GetBitContext-based access in libavf11Monitor
- CVE-2026-5229653 days apartFFmpeg before 9.0 has an out-of-bounds read because of missing required padding in WMA extradata allocation paths in libavcodec/wmaenc.c.11Monitor
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- No account or password is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- Integrity
- Availability
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- P
- Scope
- X
Weakness class (CWE)
CWE-125 · Out-of-bounds ReadCVSS vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
nvd-secondary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
ATT&CK techniques
—
Change log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- code.ffmpeg.org/FFmpeg/FFmpeg/commit/6f80e2765492700622596af720534cef33dd31b4
- code.ffmpeg.org/FFmpeg/FFmpeg/pulls/23661
- www.vulncheck.com/advisories/ffmpeg-out-of-bounds-read-via-s-pdif-muxer-spdifenc-c
Vendor advisories and official records. Exploit/PoC links are deliberately left out.