CVE-2026-66036Patch(ffmpeg / ffmpeg)

LOWCVSS 8.8 · HIGH

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 a heap out-of-bounds write vulnerability in the vf_hqdn3d filter that allows attackers to corrupt heap memory by supplying a crafted video whose frame resolution increases between frames when filtergraph reinitialization is disabled via the -reinit_filter 0 option. Attackers can provide a malicious video input where vf_hqdn3d.config_input() allocates undersized per-plane line-history buffers based on the initial frame width, and subsequent larger frames cause denoise_spatial() to write beyond the allocation boundary, resulting in heap memory corruption.

0.5/ 10 priority

Sources & remediation

Weakness type (CWE)
CWE-122

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
  • 5 mentions across 2 observed days
  • Momentum state: stable

What's happening

  • Patch or workaround mentioned in 5 signals
  • Technical details provided in 5 signals
  • Disclosure: 2 classified signals
  • Peaked 1d ago at 3 mentions (2026-07-24); latest day: 2
  • 5 total mentions across 2 days

Affected systems

Vendors
Products
ffmpeg

Deep dive

Activity timeline5 mentions / 2d
01223Mentions · 2026-07-24: 3Mentions · 2026-07-28: 2Patch / Workaround · 2026-07-24: 3Patch / Workaround · 2026-07-28: 2Technical Details · 2026-07-24: 3Technical Details · 2026-07-28: 207-2407-28
Signal classification2 categories
Patch
360.0%
Disclosure
240.0%
Referenced assets2 URLs
By indicator
Classification over time
DateTotalLabels
2026-07-243
Disclosure1Patch2
2026-07-282
Disclosure1Patch1
Full discourse5 posts
  • Rıdvan Yağlı@ridvanyagli
    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 new CVEs have been identified in FFmpeg versions 8.1.2 and earlier, leading to memory corruption, DoS, information leakage, and potential RCE via crafted media files. Users are urged to apply the patched release or upgrade to the latest version.

    00001152
    1.3K followersView on X
  • TECHEPAGES@techepages
    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

    FFmpeg has disclosed multiple high‑severity vulnerabilities, provides detailed technical information, and urges organizations to patch immediately.

    0000034
    35 followersView on X
  • Infoflowcloud@infoflowcloud
    Patch

    🚨*CVE* CVE-2026-66036 FFmpeg through 8.1.2, fixed in commit 5d7112c, contains a heap out-of-bounds write vulnerability in the vf_hqdn3d filter that allows attackers to corrupt heap memory … https://www.cve.org/CVERecord?id=CVE-2026-66036 ----- Traducción: CVE-2026-66036 FFm… http://infoflow.cloud`

    Post summary

    The post announces a heap OOB‑write flaw in FFmpeg’s vf_hqdn3d filter (CVE‑2026‑66036) and cites the commit that fixes it, without any PoC or exploitation details.

    0000035
    94 followersView on X
  • CVE@CVEnew
    Patch

    CVE-2026-66036 FFmpeg through 8.1.2, fixed in commit 5d7112c, contains a heap out-of-bounds write vulnerability in the vf_hqdn3d filter that allows attackers to corrupt heap memory … https://www.cve.org/CVERecord?id=CVE-2026-66036

    Post summary

    The post reports a heap out-of-bounds write in FFmpeg’s vf_hqdn3d filter (CVE-2026-66036) and references the commit that implements the fix.

    000001.4K
    57.9K followersView on X
  • Upwind Security MDR@UpwindMDR
    Disclosure

    🚨High - FFmpeg Heap Out-of-Bounds Write in vf_hqdn3d Filter (CVE-2026-66036) FFmpeg (through 8.1.2) has a heap out-of-bounds write in its hqdn3d denoise filter. When filtergraph reinitialization is disabled with -reinit_filter 0, vf_hqdn3d.config_input() sizes per-plane line-history buffers from the initial frame width; a later, larger-resolution frame then makes denoise_spatial() write past the allocation, corrupting the heap. An attacker supplies a crafted video whose resolution increases between frames. Exploitation requires the hqdn3d filter plus the non-default -reinit_filter 0 option on untrusted input, so exposure is narrower than a default-path bug - but heap corruption from attacker media is serious where that config is used. CVSS 7.7. 👉Update FFmpeg to the release containing fix commit 5d7112c (PR #23783).

    Post summary

    An analysis of a new FFmpeg heap out‑of‑bounds write (CVE‑2026‑66036) is disclosed, detailing the vulnerability, CVSS, and a required patch update.

    0000062
    254 followersView on X
CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
Appffmpegffmpeg---

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