Ffmpeg CVE-2026-64834

|

EUVD

EUVD-2026-47758 HIGH

Loop with Unreachable Exit Condition (Infinite Loop) (CWE-835)

2026-07-22 VulnCheck

GHSA-5xcx-3qx2-qv4x

Denial Of Service Ffmpeg

8.7

CVSS 4.0 · Vendor: VulnCheck

View

Vulnerability Assessment

Weakness

CWE

ASVS 5.0

V15 - Secure Coding and Architecture Loop termination conditions

MITRE ATT&CK

1 technique across 1 tactic: Impact

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Sign in to read

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).

Patch available 0.8% exploitation probability (EPSS)

Get an e-mail when this CVE is exploited, patched or re-scored. Free account.

AnalysisAIv1 – Jul 22, 2026

Denial of service in FFmpeg's libavformat RTP/ASF demuxer (versions 0.6.3 through 8.1.2) lets remote attackers exhaust CPU by delivering a crafted RTP/ASF stream. The rtp_asf_fix_header function in rtpdec_asf.c omits a minimum-chunksize check while iterating ASF objects, so a chunksize below the 24-byte ASF object header minimum leaves the loop pointer static and spins forever. There is no public exploit identified at time of analysis, and the flaw impacts availability only (no code execution or data exposure); it was reported by VulnCheck with an upstream fix committed.

Affected VersionsENISA

FFmpeg 0.6.3 ≤8.1.2

FFmpeg 11d5f475be95d22d5f0692220cc772b116abc632

Affected Packages

euvd ffmpeg no fix

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Sign in to check

Know when Ffmpeg gets its next vulnerability

Watch products and get an email when something new is published
Check this CVE against your own stack and servers
Exploit and PoC references, threat intelligence from 22 sources

Continue with Google Continue with GitHub

No credit card · 7-day full trial

Severity by source

Vendor (VulnCheck) PRIMARY 8.7 HIGH

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

SUSE 6.2 MEDIUM

AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Red Hat 7.5 HIGH

Primary rating from Vendor (VulnCheck).

CVSS VectorVendor: VulnCheck

Attack Vector

Network

Attack Complexity

Low

Attack Requirements

None

Privileges Required

None

User Interaction

None

Vulnerable system: Confidentiality

None

Vulnerable system: Integrity

None

Vulnerable system: Availability

High

Subsequent system: Confidentiality

None

Subsequent system: Integrity

None

Subsequent system: Availability

None

DescriptionCVE.org

FFmpeg versions 0.6.3 through 8.1.2 contain an infinite loop vulnerability in the RTP/ASF demuxer within libavformat/rtpdec_asf.c that allows remote attackers to cause denial of service by sending a crafted RTP/ASF stream. The rtp_asf_fix_header function fails to validate a minimum chunksize when iterating over ASF objects, causing the loop pointer to never advance when a chunksize is smaller than the 24-byte minimum ASF object header size, resulting in CPU exhaustion that denies service to legitimate users.

Executive ViewAI

Why It Matters

FFmpeg versions 0.6.3 through 8.1.2 contain a denial-of-service vulnerability in the RTP/ASF demuxer that allows remote attackers to exhaust server CPU resources by sending a specially crafted media stream. Organizations relying on FFmpeg for video processing, streaming, or transcoding services face potential service disruption and customer impact if exploited. A vendor patch is available and should be deployed promptly.

Recommended Action

Within 24 hours, inventory all systems running FFmpeg versions 0.6.3 through 8.1.2 and segment or restrict network access to these systems if patch deployment cannot be completed immediately. Within 7 days, apply the vendor-released patch to all affected FFmpeg installations and restart dependent services. Within 30 days, conduct post-patch validation testing to confirm service functionality and monitor logs for any exploitation attempts during the vulnerable window.

Business Impact: High

Compensating Controls

Apply vendor patch.

Threat Intelligence Overview

EPSS Score

0.8%

Top 49% exploitable

Social Media

1

Sightings

Data Quality

8 sources

Confidence: High

EUVD

CVE.org

EPSS

Vulnrichment Vendor CIRCL

VulDB

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity HIGH

CISA KEV No

Public POC No

EPSS 0.8%

Patch available Yes

Active threat No

Deciding rule

HIGH severity (CVSS 7.0-8.9)

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision

Scheduled

Exploitation

None

System Exposure· derived

Open

Automatable

Yes

Human Impact

High

Technical Impact

Partial

Priority Score

45

Low Medium High Critical

KEV: 0

EPSS: +1

CVSS: +44

PoC: 0

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Denial of Service MEDIUM

Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.

More in Ffmpeg

View all

CVE-2016-1897 MEDIUM This Month POC

FFmpeg 2.x allows remote attackers to conduct cross-origin attacks and read arbitrary files by using the concat protocol

CVE-2017-9993 HIGH Act Now

FFmpeg before 2.8.12, 3.0.x and 3.1.x before 3.1.9, 3.2.x before 3.2.6, and 3.3.x before 3.3.2 does not properly restric

CVE-2016-1898 MEDIUM This Month POC

FFmpeg 2.x allows remote attackers to conduct cross-origin attacks and read arbitrary files by using the subfile protoco

CVE-2013-4265 CRITICAL Act Now POC

The av_reallocp_array function in libavutil/mem.c in FFmpeg before 2.0.1 has an unspecified impact and remote vectors re

CVE-2020-12284 CRITICAL Act Now POC

cbs_jpeg_split_fragment in libavcodec/cbs_jpeg.c in FFmpeg 4.1 and 4.2.2 has a heap-based buffer overflow during JPEG_MA

CVE-2026-58049 HIGH This Week POC

Out-of-bounds heap write in FFmpeg's RASC video decoder (decode_dlta in libavcodec/rasc.c) allows attackers to corrupt m

CVE-2026-30754 HIGH This Week POC

Memory corruption in FFmpeg before 8.1 allows an attacker who can supply a crafted H.264/HEVC media file to corrupt heap

CVE-2021-38094 HIGH This Week POC

Integer Overflow vulnerability in function filter_sobel in libavfilter/vf_convolution.c in Ffmpeg 4.2.1, allows attacker

CVE-2021-38093 HIGH This Week POC

Integer Overflow vulnerability in function filter_robert in libavfilter/vf_convolution.c in Ffmpeg 4.2.1, allows attacke

CVE-2021-38092 HIGH This Week POC

Integer Overflow vulnerability in function filter_prewitt in libavfilter/vf_convolution.c in Ffmpeg 4.2.1, allows attack

CVE-2021-38091 HIGH This Week POC

Integer Overflow vulnerability in function filter16_sobel in libavfilter/vf_convolution.c in Ffmpeg 4.2.1, allows attack

CVE-2021-38090 HIGH This Week POC

Integer Overflow vulnerability in function filter16_roberts in libavfilter/vf_convolution.c in Ffmpeg 4.2.1, allows atta

Same weakness CWE-835 – Loop with Unreachable Exit Condition (Infinite Loop)

View all

CVE-2024-20353 HIGH POC

CVE-2020-13935 HIGH POC

CVE-2017-16944 HIGH POC

CVE-2022-0778 HIGH POC

CVE-2024-43366 CRITICAL POC

CVE-2026-25533 HIGH POC

CVE-2018-8002 HIGH POC

CVE-2026-66730 HIGH POC

Same technique Denial Of Service

View all

CVE-2015-5119 CRITICAL POC

CVE-2011-2462 CRITICAL POC

CVE-2011-0611 HIGH POC

CVE-2012-1889 HIGH POC

CVE-2012-0507 CRITICAL POC

CVE-2014-1761 HIGH POC

CVE-2015-5122 CRITICAL POC

CVE-2011-0609 HIGH POC

Vendor StatusVendor

SUSE

Severity: Moderate

Product	Status
SUSE Linux Enterprise Desktop 15 SP7	Affected
SUSE Linux Enterprise Desktop 15 SP7	Affected
SUSE Linux Enterprise High Performance Computing 15 SP7	Affected
SUSE Linux Enterprise Module for Desktop Applications 15 SP7	Affected
SUSE Linux Enterprise Module for Package Hub 15 SP7	Affected

References

Advisories & patches

PATCH https://code.ffmpeg.org/FFmpeg/FFmpeg/commit/11d5f475be95d22d5f0692220cc772b116abc632 ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2026-64834 ADVISORY https://ubuntu.com/security/notices/USN-8716-1 ADVISORY https://vuldb.com/vuln/382390 REF https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/23663 REF https://www.vulncheck.com/advisories/ffmpeg-infinite-loop-dos-via-rtp-asf-demuxer

Search Externally

Exploit-DB PacketStorm Snyk Rapid7 Nuclei Templates Trickest PoC

Back

This site uses cookies essential for authentication and security. No tracking or analytics cookies are used. Privacy Policy