CVE-2026-66037Patch(ffmpeg / ffmpeg)

LOWCVSS 5.5 · MEDIUM

Signal is active with 2 mentions in latest observed window

Immediate actions

Patch ffmpeg ffmpeg systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

FFmpeg through 8.1.2, fixed in commit 5d7112c, contains an uncontrolled resource consumption vulnerability in the IAMF demuxer that allows an unauthenticated attacker to cause multi-gigabyte memory allocation from a 17-byte input file by supplying a crafted count_label field. The mix_presentation_obu() function in libavformat/iamf_parse.c calls av_calloc(count_label, sizeof(*language_label)) with an attacker-controlled value before validating available OBU data, enabling an allocation amplification of approximately 126 million bytes per input byte that exhausts process memory or triggers an OOM-kill during format probing.

ffmpeg CVEs Back to dashboard

0.5/ 10 priority

Sources & remediation

Patch / fix

Vendor / third-party advisories

https://www.vulncheck.com/advisories/ffmpeg-iamf-demuxer-uncontrolled-resource-consumption-via-mix-presentation-obu

Weakness type (CWE)

CWE-770

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

STABLE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

ffmpeg

Threat summary

Patch or workaround signal is available
4 mentions across 2 observed days
Momentum state: stable

What's happening

Patch or workaround mentioned in 4 signals
Technical details provided in 4 signals
Disclosure: 1 classified signal
Peaked 1d ago at 2 mentions (2026-07-24); latest day: 2
4 total mentions across 2 days

Affected systems

Vendors

ffmpeg

Products

ffmpeg

Deep dive

Activity timeline4 mentions / 2d

Signal classification2 categories

Patch

375.0%

Disclosure

125.0%

Referenced assets2 URLs

By indicator

Classification over time

Date	Total	Labels

2026-07-24	2	Patch2
2026-07-28	2	Disclosure1Patch1

Full discourse4 posts

Rıdvan Yağlı@ridvanyagli87d
Disclosure
🔴 FFmpeg'te 6 yeni önemli güvenlik açığı (CVE-2026-66036, CVE-2026-66037, CVE-2026-66038, CVE-2026-66039, CVE-2026-66040 ve CVE-2026-66041) keşfedildi. Açıklar; kötü amaçlı hazırlanmış video, ses, altyazı ve PNG dosyaları aracılığıyla bellek bozulmasına, hizmet reddine (DoS), bilgi sızıntısına ve bazı senaryolarda uzaktan kod çalıştırmaya (RCE) yol açabiliyor. FFmpeg 8.1.2 ve daha eski sürümler risk altında. FFmpeg'i yamalı sürüme, FFmpeg kullanan uygulamalarınızı ise en güncel sürüme yükseltin.
Post summary
Six critical FFmpeg vulnerabilities (CVE-2026-66036 to CVE-2026-66041) have been disclosed, causing memory corruption, DoS, information leakage, and in some scenarios remote code execution; users are urged to apply patches or upgrade to the latest version.
00001152
1.3K followersView on X
TECHEPAGES@techepages88d
Patch
FFmpeg Security Advisory: Multiple high-severity vulnerabilities (CVSS up to 7.7) have been disclosed and patched upstream — organizations should update immediately and avoid processing untrusted media with risky filter configurations. 🔵 CVE-2026-66036 – Heap corruption via vf_hqdn3d filter 🔵 CVE-2026-66041 – Buffer overflow via vf_quirc/subtitle parsing 🔵 CVE-2026-66039 – Integer/heap overflow in MACE6 audio decoder 🔵 CVE-2026-66040 – Heap corruption in PNG/APNG encoder 🔵 CVE-2026-66037 – Memory exhaustion via IAMF demuxer 🔵 CVE-2026-66038 – Uninitialized memory disclosure in LCL/ZLIB decoder Recommended Action: Update FFmpeg to a version incorporating the upstream fixes (commits 5d7112c, 8670835, e7cbfd1, aafb5c6, b506faf, 4da9812).
Post summary
The advisory warns of six high‑severity FFmpeg CVEs and urges immediate patching by updating to upstream‑fixed versions.
0000034
35 followersView on X
Infoflowcloud@infoflowcloud91d
Patch
🚨*CVE* CVE-2026-66037 FFmpeg through 8.1.2, fixed in commit 5d7112c, contains an uncontrolled resource consumption vulnerability in the IAMF demuxer that allows an unauthenticated attacker… https://www.cve.org/CVERecord?id=CVE-2026-66037 ----- Traducción: CVE-2026-66037 FFm… http://infoflow.cloud`
Post summary
The post announces CVE-2026-66037 in FFmpeg, describing an uncontrolled resource consumption flaw and noting that it has been fixed with commit 5d7112c.
0000036
94 followersView on X
CVE@CVEnew91d
Patch
CVE-2026-66037 FFmpeg through 8.1.2, fixed in commit 5d7112c, contains an uncontrolled resource consumption vulnerability in the IAMF demuxer that allows an unauthenticated attacker… https://www.cve.org/CVERecord?id=CVE-2026-66037
Post summary
An uncontrolled resource consumption flaw in FFmpeg’s IAMF demuxer (CVE‑2026‑66037) was disclosed and fixed in commit 5d7112c; no PoC or active exploitation reported.
00000760
57.9K followersView on X

CPE platform detail1 entries

Part:

Vendor:

Product:

Version:

Target SW:

Target HW:

1 of 1 entries

Part	Vendor	Product	Version	Target SW	Target HW
App	ffmpeg	ffmpeg	-	-	-

Explore more

Back to dashboard ffmpeg CVEs ffmpeg vulnerabilities

What researchers are saying

CVE-2026-66037

Rıdvan Yağlı[verified]@ridvanyagliDisclosure

Six critical FFmpeg vulnerabilities (CVE-2026-66036 to CVE-2026-66041) have been disclosed, causing memory corruption, DoS, information leakage, and in some scenarios remote code execution; users are urged to apply patches or upgrade to the latest version.

TECHEPAGES[verified]@techepagesPatch

The advisory warns of six high‑severity FFmpeg CVEs and urges immediate patching by updating to upstream‑fixed versions.

Infoflowcloud@infoflowcloudPatch

The post announces CVE-2026-66037 in FFmpeg, describing an uncontrolled resource consumption flaw and noting that it has been fixed with commit 5d7112c.

CVE@CVEnewPatch

An uncontrolled resource consumption flaw in FFmpeg’s IAMF demuxer (CVE‑2026‑66037) was disclosed and fixed in commit 5d7112c; no PoC or active exploitation reported.