Skip to main content
Threat Radar animated logo
EPSS 0.2%top 92%

Libav: FFmpeg versions 3.4 through 8.1.2 contain an out-of-bounds write vulnerability in the vf_floodfill video filter that allows attackers to corrupt… (CVE-2026-65705)

0
Medium
VulnerabilityCVE-2026-65705gcveosvghsa-gf7r-r5xq-r3hmcve-2026-65705ghsaubuntu-cve-2026-65705ubuntu-pro-14-04-ltsubuntu-pro-16-04-ltsubuntu-pro-18-04-ltsubuntu-pro-20-04-ltsubuntu-pro-22-04-ltsubuntu-pro-24-04-ltsubuntu-pro-26-04-ltsubuntu-26-10
Published: 07/23/2026 (07/23/2026, 20:17:00 UTC)
Source: GCVE Database
Product: libav

Description

FFmpeg versions 3.4 through 8.1.2 contain an out-of-bounds write vulnerability in the vf_floodfill video filter. This vulnerability occurs when processing dynamically sized video streams with filtergraph reinitialization disabled, leading to heap memory corruption and potential process crashes. Depending on heap layout and process hardening, exploitation may allow code execution. A patch is available to address this issue.

CVSS v3.1

Score 7.8high

Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected software

GitHub Actionsmore threats →ai
ffmpeg/FFmpeg
pkg:github/ffmpeg/FFmpeg
Affected versions
<3.4<=8.1.2
Ubuntu:Pro:14.04:LTSmore threats →ghsa
libav
pkg:deb/ubuntu/libav?arch=source&distro=esm-infra-legacy/trusty
Affected versions
=6:0.8.7-1ubuntu2=6:9.10-1ubuntu1=6:9.10-1ubuntu2=6:9.10-1ubuntu5=6:9.10-1ubuntu6=6:9.10-1ubuntu7=6:9.11-2ubuntu1=6:9.11-2ubuntu2=6:9.13-0ubuntu0.14.04.1=6:9.14-0ubuntu0.14.04.1=6:9.16-0ubuntu0.14.04.1=6:9.18-0ubuntu0.14.04.1=6:9.20-0ubuntu0.14.04.1=6:9.20-0ubuntu0.14.04.1+esm1
Ubuntu:Pro:18.04:LTSmore threats →ghsa
ffmpeg
pkg:deb/ubuntu/ffmpeg?arch=source&distro=esm-apps/bionic
Affected versions
<7:3.4.11-0ubuntu0.1+esm15=7:3.3.4-2=7:3.3.4-2build3=7:3.4-2ubuntu2=7:3.4-4=7:3.4-4build1=7:3.4.1-1=7:3.4.1-1build1=7:3.4.2-1=7:3.4.2-1build1=7:3.4.2-2=7:3.4.4-0ubuntu0.18.04.1=7:3.4.6-0ubuntu0.18.04.1=7:3.4.8-0ubuntu0.2=7:3.4.11-0ubuntu0.1=7:3.4.11-0ubuntu0.1+esm1=7:3.4.11-0ubuntu0.1+esm2=7:3.4.11-0ubuntu0.1+esm3=7:3.4.11-0ubuntu0.1+esm4=7:3.4.11-0ubuntu0.1+esm5=7:3.4.11-0ubuntu0.1+esm6=7:3.4.11-0ubuntu0.1+esm7=7:3.4.11-0ubuntu0.1+esm8=7:3.4.11-0ubuntu0.1+esm9=7:3.4.11-0ubuntu0.1+esm10=7:3.4.11-0ubuntu0.1+esm11=7:3.4.11-0ubuntu0.1+esm12=7:3.4.11-0ubuntu0.1+esm13=7:3.4.11-0ubuntu0.1+esm14
Ubuntu:Pro:20.04:LTSmore threats →ghsa
ffmpeg
pkg:deb/ubuntu/ffmpeg?arch=source&distro=esm-apps/focal
Affected versions
<7:4.2.7-0ubuntu0.1+esm16=7:4.1.4-1build2=7:4.2.1-2=7:4.2.1-2ubuntu1=7:4.2.2-1build1=7:4.2.2-1ubuntu1=7:4.2.4-1ubuntu0.1=7:4.2.4-1ubuntu0.1+esm1=7:4.2.7-0ubuntu0.1=7:4.2.7-0ubuntu0.1+esm1=7:4.2.7-0ubuntu0.1+esm2=7:4.2.7-0ubuntu0.1+esm3=7:4.2.7-0ubuntu0.1+esm4=7:4.2.7-0ubuntu0.1+esm5=7:4.2.7-0ubuntu0.1+esm6=7:4.2.7-0ubuntu0.1+esm7=7:4.2.7-0ubuntu0.1+esm8=7:4.2.7-0ubuntu0.1+esm9=7:4.2.7-0ubuntu0.1+esm10=7:4.2.7-0ubuntu0.1+esm11=7:4.2.7-0ubuntu0.1+esm12=7:4.2.7-0ubuntu0.1+esm13=7:4.2.7-0ubuntu0.1+esm14=7:4.2.7-0ubuntu0.1+esm15
Ubuntu:Pro:22.04:LTSmore threats →ghsa
ffmpeg
pkg:deb/ubuntu/ffmpeg?arch=source&distro=esm-apps/jammy
Affected versions
<7:4.4.2-0ubuntu0.22.04.1+esm15=7:4.4-6ubuntu5=7:4.4.1-2ubuntu1=7:4.4.1-3ubuntu1=7:4.4.1-3ubuntu2=7:4.4.1-3ubuntu3=7:4.4.1-3ubuntu5=7:4.4.2-0ubuntu0.22.04.1=7:4.4.2-0ubuntu0.22.04.1+esm1=7:4.4.2-0ubuntu0.22.04.1+esm2=7:4.4.2-0ubuntu0.22.04.1+esm3=7:4.4.2-0ubuntu0.22.04.1+esm4=7:4.4.2-0ubuntu0.22.04.1+esm5=7:4.4.2-0ubuntu0.22.04.1+esm6=7:4.4.2-0ubuntu0.22.04.1+esm7=7:4.4.2-0ubuntu0.22.04.1+esm8=7:4.4.2-0ubuntu0.22.04.1+esm9=7:4.4.2-0ubuntu0.22.04.1+esm10=7:4.4.2-0ubuntu0.22.04.1+esm11=7:4.4.2-0ubuntu0.22.04.1+esm12=7:4.4.2-0ubuntu0.22.04.1+esm13=7:4.4.2-0ubuntu0.22.04.1+esm14
Ubuntu:Pro:24.04:LTSmore threats →ghsa
ffmpeg
pkg:deb/ubuntu/ffmpeg?arch=source&distro=esm-apps/noble
Affected versions
<7:6.1.1-3ubuntu5+esm13=7:6.0-6ubuntu1=7:6.0-9ubuntu1=7:6.1-2ubuntu1=7:6.1-3ubuntu1=7:6.1-4ubuntu1=7:6.1-5ubuntu1=7:6.1.1-1ubuntu1=7:6.1.1-3ubuntu1=7:6.1.1-3ubuntu5=7:6.1.1-3ubuntu5+esm1=7:6.1.1-3ubuntu5+esm2=7:6.1.1-3ubuntu5+esm3=7:6.1.1-3ubuntu5+esm4=7:6.1.1-3ubuntu5+esm5=7:6.1.1-3ubuntu5+esm6=7:6.1.1-3ubuntu5+esm7=7:6.1.1-3ubuntu5+esm8=7:6.1.1-3ubuntu5+esm10=7:6.1.1-3ubuntu5+esm11=7:6.1.1-3ubuntu5+esm12
Ubuntu:26.10more threats →ghsa
ffmpeg
pkg:deb/ubuntu/ffmpeg?arch=source&distro=stonking
Affected versions
=7:8.0.1-3ubuntu2=7:8.1-3ubuntu3=7:8.1.2-2ubuntu2
Ubuntu:Pro:26.04:LTSmore threats →ghsa
ffmpeg
pkg:deb/ubuntu/ffmpeg?arch=source&distro=esm-apps/resolute
Affected versions
<7:8.0.1-3ubuntu2+esm4=7:7.1.1-1ubuntu4=7:7.1.2-1ubuntu3=7:7.1.2-1ubuntu4=7:7.1.3-1ubuntu1=7:8.0.1-2ubuntu1=7:8.0.1-3ubuntu1=7:8.0.1-3ubuntu2=7:8.0.1-3ubuntu2+esm1=7:8.0.1-3ubuntu2+esm3

Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.

AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 10/18/2026, 03:29:22 UTC

Technical Analysis

An out-of-bounds write vulnerability exists in the vf_floodfill video filter of FFmpeg versions 3.4 through 8.1.2. The flaw is triggered when a dynamically sized video stream is processed with filtergraph reinitialization disabled, causing heap memory corruption. This memory corruption can lead to process crashes and, depending on the heap layout and system hardening, may enable attackers to execute arbitrary code within the affected process.

Potential Impact

Successful exploitation can cause heap memory corruption resulting in process crashes. In some environments, this may escalate to arbitrary code execution, compromising the affected system's security. The vulnerability affects confidentiality, integrity, and availability of the system running the vulnerable FFmpeg versions.

Mitigation Recommendations

A patch is available for this vulnerability. Users should apply the official fixes provided by the FFmpeg project or their operating system vendors to remediate the issue. No additional mitigation steps are indicated beyond applying the patch.

Pro Console: star threats, build custom feeds, automate alerts via Slack, email & webhooks.Upgrade to Pro

Technical Details

Gcve Source
db.gcve.eu
Osv Id
GHSA-gf7r-r5xq-r3hm
Osv Schema Version
1.4.0
Aliases
["CVE-2026-65705"]
Database Specific Severity
HIGH
Cvss Version
4.0

Threat ID: 6a629b0e9c2644c7f8d86328

Added to database: 07/23/2026, 22:51:58 UTC

Last enriched: 10/18/2026, 03:29:22 UTC

Last updated: 10/23/2026, 01:15:25 UTC

Views: 116

Community Reviews

0 reviews

Crowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.

Sort by
Loading community insights…

Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.

Actions

PRO

Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.

Please log in to the Console to use AI analysis features.

Need more coverage?

Upgrade to Pro Console for AI refresh and higher limits.

For incident response and remediation, OffSeq services can help resolve threats faster.

Latest Threats

Breach by OffSeqOFFSEQFRIENDS — 25% OFF

Check if your credentials are on the dark web

Instant breach scanning across billions of leaked records. Free tier available.

Scan now
OffSeq TrainingCredly Certified

Lead Pen Test Professional

Technical5-day eLearningPECB Accredited
View courses