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Fencer Vulns
high 7.5

CVE-2026-30997 json

An 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 Serv…

published 2026-04-13 6 mo ago modified 2026-07-25 3 mo ago also EUVD-2026-21972 , JLSEC-2026-649

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 27%
public exploits
0
none known

Summary

An 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 Service (DoS) via a crafted input.

Patch / fix

  • julia FFMPEG_jll 8.1.0+0
  • julia FFMPEG_nogpl_jll 8.1.0+0
  • julia FFplay_jll 8.1.2+0
  • ffmpeg Debian 12 7:5.1.9-0+deb12u1
  • ffmpeg Debian 13 7:7.1.5-0+deb13u1
  • ffmpeg Debian 14 7:8.1.1-1

debian advisories DEBIAN-CVE-2026-30997

  • ffmpeg-7 SLES for SAP applications 16.0, SLES 16.0 7.1.4-160000.2.1
  • ffmpeg-4 SLE Workstation Extension 15 SP7, SLE Module for Package Hub 15 SP7 4.4.7-150600.13.47.1
  • ffmpeg-4 SLES for SAP 15 SP4, SLES 15 SP4-LTSS, SLE High Performance Computing 15 SP4-LTSS +1 more 4.4.7-150400.3.67.1

suse advisories SUSE-SU-2026:22573-1SUSE-SU-2026:2445-1SUSE-SU-2026:2444-1

  • ffmpeg-9 openSUSE Tumbleweed 9.0.1-1.1
  • ffmpeg-7 openSUSE Leap 16.0 7.1.4-160000.2.1
  • ffmpeg-7 openSUSE Tumbleweed 7.1.4-3.1
  • ffmpeg-4 openSUSE Tumbleweed 4.4.7-3.1
  • ffmpeg-8 openSUSE Tumbleweed 8.1.1-3.1

opensuse advisories openSUSE-SU-2026:11515-1openSUSE-SU-2026:21258-1openSUSE-SU-2026:11009-1openSUSE-SU-2026:10931-1openSUSE-SU-2026:10890-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-30997 updated cvss 5.9

FFmpeg: FFmpeg: Denial of Service via out-of-bounds read

  • Red Hat Lightspeed Core openshift-lightspeed-tech-preview/lightspeed-rag-tool-rhel9 Red Hat Enterprise Linux AI (RHEL AI) 3 ffmpeg, rhelai3/bootc-cuda-rhel9, rhelai3/bootc-rocm-rhel9, redhat-user-workloads/rhel-ai-tenant/rhelai-bootc-3-3/bootc-cuda-aws-3-3, redhat-user-workloads/rhel-ai-tenant/rhelai-bootc-3-3/bootc-cuda-gcp-3-3, redhat-user-workloads/rhel-ai-tenant/rhelai-bootc-3-3/bootc-cuda-azure-3-3, +1 more Red Hat OpenShift AI (RHOAI) rhoai/odh-vllm-gaudi-rhel9
    affected: workaround, no fix available “Fix deferred”

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
6 mo ago

Exploit prediction

0.34% chance of exploitation in the next 30 days, higher than 27% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • excellent-oatmeal-319.notion.site https://excellent-oatmeal-319.notion.site/CVE-2026-30997-Out-of-Bounds-Access-a7929817b9794568b2f7774397c7d65f referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CISA ADP 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
OSV 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
julia FFMPEG_jll
<8.1.0+0
8.1.0+0
julia FFMPEG_nogpl_jll
<8.1.0+0
8.1.0+0
julia FFplay_jll
<8.1.2+0
8.1.2+0

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.