CVE-2026-75142: ffmpeg Stack-based Buffer Overflow
CVSS: 8.5v4.0HighAwaiting analysis
AliasesUBUNTU-CVE-2026-75142DEBIAN-CVE-2026-75142CGA-5xf6-j2g4-qxqmCGA-6j3v-fj6x-h2fjCGA-8jrr-vh7v-x54mCGA-8vc5-c4w9-q895CGA-fgrp-3j3x-769gCGA-fw45-qcjv-j8pxCGA-mjqj-f36r-7p3qCGA-pqwx-v545-2qvrCGA-pr24-9596-xv8mCGA-wj68-gfmp-3qc9CGA-268g-m89w-6wr7CGA-2xrg-p2jj-73mcCGA-3f6g-5pxp-r3m3CGA-3f8v-c56v-629pCGA-3j4h-r8xr-33gmCGA-4q9r-3c8f-jxvhCGA-594h-3r56-hvx3CGA-5pcf-vqm2-rx9fCGA-6rp6-hhqj-c4r6CGA-7848-xfmc-h9hrCGA-9m4m-qj35-7vw6CGA-ccjg-mfw6-4wv2CGA-crv4-jg77-q2xgCGA-f836-37cw-3m7pCGA-fc9f-5fmm-98qwCGA-g9h8-gg9m-hjccCGA-ghw9-x65q-f34rCGA-hgmm-7vw9-whv6CGA-j72q-wxmw-8wvrCGA-jqxm-3hpj-vcjjCGA-m8fh-6cm6-xgcvCGA-qpp9-27xq-c568CGA-r8rc-fw57-jp7mCGA-rc3r-9qp5-8r88CGA-v4m9-x3g4-6ghxCGA-v8vw-hpc2-pf3wCGA-vqpw-m492-r76vCGA-w8hw-qwh2-rq63
Published 19-08-2026Last modified 27-08-2026
Vulnerability summary
CVE-2026-75142 is a high (CVSS 8.5) Stack-based Buffer Overflow vulnerability in ffmpeg. EPSS estimates a 0.20% chance of exploitation in the next 30 days, higher than 9% of scored vulnerabilities.
CVSS score
8.5/10
010
High · v4.0 (CVE.org)EPSS score
0.20%
0%100%
Low · +0.06 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 10 · Related 9Timeline
- 19-08-2026PublishedVulnerability first disclosed.
- 27-08-2026Last modifiedVulnerability information updated.
Description
FFmpeg before commit 9d786e4 contains a stack buffer overflow in the MPEG-PS muxer (libavformat/mpegenc.c). When muxing input with more streams than the muxer's fixed-size stack buffer accommodates, the buffer is overflowed. A crafted input with an excessive number of streams triggers the overflow during MPEG-PS muxing.
CVSS metrics
7 scores · 4 sources · 2 versionsHigh 8.5Preferred score · CVE.org (CNA)
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:NSourcesAll 4 agree
- OSV · UbuntuEcosystem advisory · calculated8.5HighCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- OSV · DebianEcosystem advisory · calculated8.5HighCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/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
- NVDNIST8.5HighCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/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
High 7.8Preferred score · CVE.org (CNA)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HSourcesAll 3 agree
- OSV · UbuntuEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- NVDNIST7.8HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS trend
Probability
0.20%
Chance of exploitation in the next 30 days
Percentile
9%
Versus all other CVEs
30-day change
+0.06 pp
From 0.14% on 18-09-2026
18-09-202618-10-2026
EPSS score0.20%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Chainguard19 products
- eco-python-ffmpeg-6-minimal< 6.1.6-r3
- eco-python-ffmpeg-6-minimal-dev< 6.1.6-r3
- eco-python-ffmpeg-6-minimal-static< 6.1.6-r3
- eco-python-ffmpeg-7-minimal< 7.1.5-r2
- eco-python-ffmpeg-7-minimal-dev< 7.1.5-r2
Wolfi5 products
- ffmpeg-7< 7.1.5-r3
- ffmpeg-7.1< 7.1.5-r4
- ffmpeg-8.0< 8.0.3-r4
- ffmpeg-8.1< 8.1.3-r0
- ffmpeg-9.0< 9.0.1-r0
Ubuntu2 products
- ffmpeg< 7:2.8.17-0ubuntu0.1+esm17 | < 7:3.4.11-0ubuntu0.1+esm15 | < 7:4.2.7-0ubuntu0.1+esm16 | < 7:4.4.2-0ubuntu0.22.04.1+esm15 | < 7:6.1.1-3ubuntu5+esm13 | All versions (No fix recorded) | < 7:8.0.1-3ubuntu2+esm4
- libavAll versions (No fix recorded)
Debian1 product
- ffmpegAll versions (No fix recorded) | < 7:9.0.2-1
Ffmpeg1 product
- ffmpeg< 9d786e4b5e9b8482651928574de33772aeee7be1
5 vendors · 28 products
