VulnSocial

CVE-2026-56209Patch

LOW

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Patch affected systems immediately

Recommended action window: Monitor and triage in normal cycle

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0.5/ 10 priority

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

STABLE

Threat summary

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

What's happening

  • Patch or workaround mentioned in 1 signal
  • Technical details provided in 2 signals
  • Disclosure: 1 classified signal
  • Peaked 1d ago at 1 mentions (2026-06-19); latest day: 1
  • 2 total mentions across 2 days

Deep dive

Activity timeline2 mentions / 2d
00111Mentions · 2026-06-19: 1Mentions · 2026-06-25: 1Patch / Workaround · 2026-06-19: 1Technical Details · 2026-06-19: 1Technical Details · 2026-06-25: 106-1906-25
Signal classification2 categories
Patch
150.0%
Disclosure
150.0%
Classification over time
DateTotalLabels
2026-06-191
Patch1
2026-06-251
Disclosure1
Full discourse2 posts
  • DFIR Lab@DFIR_Lab
    Disclosure

    🚨 HIGH: CVE-2026-56209 (CVSS 7.1) - Arbitrary write vulnerability in libaom AV1 codec. Missing bounds check in SVC layer control allows attackers to write ~1,200 bytes at controlled addresses via crafted frames. Potential RCE. #CVE #PatchNow https://t.co/NnB7WsphW4

    Post summary

    The tweet announces CVE-2026-56209 as an arbitrary write vulnerability in the libaom AV1 codec, providing technical details such as the bounds check flaw and potential for RCE, without any mention of a PoC, exploit code, or active attacks.

    0000151
    52 followersView on X
  • Upwind Security MDR@UpwindMDR
    Patch

    🚨 High - libaom AV1 Encoder Arbitrary Address Write → RCE (CVE-2026-56209) A missing bounds check in libaom's SVC layer ID control function lets crafted image pixels inject an arbitrary pointer into the cyclic refresh map, making the encoder write ~1,200 bytes at an attacker-controlled address — deterministic, no info leak. Frames sent to a network-facing libaom encoder with SVC enabled yield DoS or potential RCE (CVSS 7.1, CWE-787). 👉 Affected: libaom (reference AV1 codec) with SVC enabled | Apply the aomedia patched build (commit a93ba0ffaa) / vendor update

    Post summary

    CVE-2026-56209 is a missing bounds check in libaom's SVC encoder that could allow RCE; however, a patched build is available for mitigation.

    0000054
    219 followersView on X

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