CVE-2026-56208 — CVE & Security Advisory Radar

🎯 CVE-2026-56208 HIGH 7.6 🔥 EPSS 42% 🇪🇺 EUVD

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CVE-2026-56208 | A heap buffer overflow vulnerability was found in libaom, the reference AV1 codec implementation. A flaw in the AV1 encoder's Look-Ahead Processing (LAP) mode causes the first-pass stats ring buffer wrap-around guard to be bypassed when g_lag_in_frames is set to 1 or higher. This results in a 232-byte out-of-bounds write on every encoded frame after the second, corrupting adjacent heap objects. An attacker who can influence encoder configuration in a transcod

A heap buffer overflow vulnerability was found in libaom, the reference AV1 codec implementation. A flaw in the AV1 encoder's Look-Ahead Processing (LAP) mode causes the first-pass stats ring buffer wrap-around guard to be bypassed when g_lag_in_frames is set to 1 or higher. This results in a 232-byte out-of-bounds write on every encoded frame after the second, corrupting adjacent heap objects. An attacker who can influence encoder configuration in a transcoding service or WebRTC session could exploit this to cause a denial of service (process crash) or potentially achieve code execution.

Klassifikation & Betroffenheit:

Red Hat Red Hat Hardened Images patch: 3.14.0-0.1.hum1Red Hat OpenShift AI 3.4 patch: 1787077779Red Hat Enterprise Linux 9.6 Extended Update Support patch: 0:140.13.0-1.el9_6Red Hat Enterprise Linux 10.0 Extended Update Support patch: 0:140.13.0-1.el10_0Red Hat Enterprise Linux AI 3.4 for RHEL 9 patch: 0:3.14.0-1.el9aiRed Hat Enterprise Linux 9.4 Update Services for SAP Solutions patch: 0:140.13.0-1.el9_4Red Hat Enterprise Linux 9 patch: 0:140.13.0-1.el9_8Red Hat OpenShift AI 3.4 patch: 1787076778

Improper Restriction of Operations within the Bounds of a Memory Buffer 🎯 High

The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.

🛡️ Empfohlene Mitigation: Use a language that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid. For example, many languages that perform their own memory management, such as Java and Perl, are not subject to buffer overflows. Other languages, such as Ada and C#, typically provide overflow prot…

Vollständige Definition bei MITRE ➔

⚔️ Typische Angriffsmuster (CAPEC):

CAPEC-10 · Buffer Overflow via Environment Variable… (High) CAPEC-14 · Client-side Injection-induced Buffer Ove… (High) CAPEC-24 · Filter Failure through Buffer Overflow (High) CAPEC-42 · MIME Conversion (High) CAPEC-44 · Overflow Binary Resource File (Very High) CAPEC-45 · Buffer Overflow via Symbolic Links (High) CAPEC-100 · Overflow Buffers (Very High) CAPEC-123 · Buffer Manipulation (Very High)

🧩 Ähnliche Schwachstellen (Hersteller/Klasse/Score-Band):

CVE-2026-18963 9.1 CVE-2025-7493 9.1 CVE-2025-4404 9.1 CVE-2025-49794 9.1 CVE-2025-49796 9.1

📚 Referenzen & Quellen:

🇪🇺 Original-Eintrag (ENISA EUVD) 🇺🇸 NVD-Eintrag

Ausnutzungs-Zeitleiste:

Reserviert 2026

Veröffentlicht 06/2026

Heute 07.09.

CVSS-Vektor-Analyse: 7.6

AV · Angriffsvektor Netzwerk

AC · Komplexität Gering

PR · Privilegien Keine

UI · Interaktion Erforderlich

S · Scope Unverändert

C · Vertraulichkeit Gering

I · Integrität Gering

A · Verfügbarkeit Hoch

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H

Veröffentlicht:19.06.2026

Aktualisiert:28.08.2026 12:04

Assigner (CNA):redhat

EUVD-ID:EUVD-2026-38045

CWE-119: Memory Corruption ✓ Offizieller Patch / Advisory verfügbar

💡 Gegenmaßnahme: Sicherheits-Update des Herstellers zeitnah einspielen und Netzwerksegmentierung prüfen.

Tier	2026-08-29	2026-09-06
≥90 %	4	0
≥50 %	4	0
≥10 %	3	0
<10 %	304	300

7.6 HIGH

🇪🇺 EUVD

EPSS

42%

CVE-2026-56208 🌐 Netzwerk (Remote) 🔓 Keine Authentifizierung nötig

Red Hat

CVE-2026-56208 | A heap buffer overflow vulnerability was found in libaom, the reference AV1 codec implementation. A flaw in the AV1 encoder's Look-Ahead Processing (LAP) mode causes the first-pass stats ring buffer wrap-around guard to be bypassed when g_lag_in_frames is set to 1 or higher. This results in a 232-byte out-of-bounds write on every encoded frame after the second, corrupting adjacent heap objects. An attacker who can influence encoder configuration in a transcod

CWE-119: Memory Corruption ✓ Offizieller Patch / Advisory verfügbar

💡 Gegenmaßnahme: Sicherheits-Update des Herstellers zeitnah einspielen und Netzwerksegmentierung prüfen.

19.06.2026

🛡️ Details ➔

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