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CVE Record

CVE-2026-56211: Libaom: libaom: remote code execution via svc layer context handling with attacker-controlled frames

A remote code execution vulnerability was found in libaom, the reference AV1 codec implementation. Insufficient bounds validation in the AV1 encoder's SVC (Scalable Video Coding) layer ID control allows an attacker to supply crafted video frame pixels that overlap with internal encoder layer context structures. In fork-based video processing services, an attacker can use this to hijack the cyclic refresh map pointer, brute-force the process base address via a crash oracle, and redirect control flow to achieve arbitrary command execution. Exploitation requires the target service to use libaom with SVC encoding enabled and accept attacker-supplied video frames.

HighCVSS 7.1Not KEV-listedUpdated
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CVE-2026-56211 mapping review

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Vulnerability profileCVE Program record
Severity
High
CVSS
7.1 (3.1)
Known Exploited
No
Published

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

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

2CVSS vectors
7Timeline events
2ADP providers
44Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: noneAutomatable: noTechnical Impact: total

CVSS vector scores

2 official scores

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
7.1CVSS 3.1HighCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:H/A:H1.65.5redhat
7.1CVSS 3.1HighCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:H/A:H1.65.5redhat-SADP

Vulnerability scoring details

Base CVSS 3.1 score

7.1High
CVSS 3.1 vector shape for CVE-2026-56211Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

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

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. ADP timelineredhat-SADP

    Reported to Red Hat.

  2. ADP timelineredhat-SADP

    Made public.

  3. Source timelineredhat

    Reported to Red Hat.

  4. Source timelineredhat

    Made public.

  5. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  6. CVE publishedCVE Program

    The CVE record was published.

  7. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

ADP provider summaries

CISA-ADPCISA ADP Vulnrichment
other:ssvc
redhat-SADPlibaom: libaom: remote code execution via SVC layer context handling with attacker-controlled frames
other:Red Hat severity ratingcvssV3_1
  • 2026-06-19T00:00:00.000Z: Reported to Red Hat.
  • 2026-06-19T00:00:00.000Z: Made public.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
Red HatRed Hat Enterprise Linux AI 3.3 for RHEL 9aom, 0:3.14.0-1.el9aiaffected
Red HatRed Hat Enterprise Linux AI 3.4 for RHEL 9aom, 0:3.14.0-1.el9aiaffected
Red HatRed Hat Enterprise Linux AI 3.5 for RHEL 9aom, 0:3.14.0-1.el9aiaffected
Red HatRed Hat AI Inference Server 3.2rhaiis/vllm-cuda-rhel9, 1787860580affected
Red HatRed Hat AI Inference Server 3.2rhaiis/model-opt-cuda-rhel9, 1787772157affected
Red HatRed Hat AI Inference Server 3.2rhaiis/vllm-rocm-rhel9, 1787884873affected
Red HatRed Hat AI Inference Server 3.3rhaiis/model-opt-cuda-rhel9, 1789508287affected
Red HatRed Hat AI Inference Server 3.3rhaiis/vllm-spyre-rhel9, 1789502493affected
Red HatRed Hat AI Inference Server 3.3rhaiis/vllm-rocm-rhel9, 1789504371affected
Red HatRed Hat AI Inference Server 3.3rhaiis/vllm-cuda-rhel9, 1789582776affected
Red HatRed Hat Enterprise Linux AI 3.3rhelai3/bootc-aws-cuda-rhel9, 1790936334affected
Red HatRed Hat Enterprise Linux AI 3.3rhelai3/bootc-azure-cuda-rhel9, 1790936351affected
Red HatRed Hat Enterprise Linux AI 3.3rhelai3/bootc-azure-rocm-rhel9, 1790850900affected
Red HatRed Hat Enterprise Linux AI 3.3rhelai3/bootc-cuda-rhel9, 1790866732affected
Red HatRed Hat Enterprise Linux AI 3.3rhelai3/bootc-gcp-cuda-rhel9, 1790936334affected
Red HatRed Hat Enterprise Linux AI 3.3rhelai3/bootc-rocm-rhel9, 1790791893affected
Red HatRed Hat Enterprise Linux AI 3.3rhelai3/disk-image-cuda-rhel9, 1790954179affected
Red HatRed Hat Hardened Imagesaom-main, 3.14.0-0.1.hum1affected
Red HatRed Hat OpenShift AI 3.3rhai/base-image-neuron-rhel9, 1789137552affected
Red HatRed Hat OpenShift AI 3.3rhai/base-image-rocm-7.0-rhel9, 1789137548affected
Red HatRed Hat OpenShift AI 3.3rhai/base-image-cuda-13.0-rhel9, 1789137636affected
Red HatRed Hat OpenShift AI 3.3rhai/base-image-tpu-rhel9, 1789137548affected
Red HatRed Hat OpenShift AI 3.3rhai/base-image-rocm-6.4-rhel9, 1789137548affected
Red HatRed Hat OpenShift AI 3.3rhai/base-image-cpu-rhel9, 1789137641affected
Red HatRed Hat OpenShift AI 3.3rhai/base-image-spyre-rhel9, 1789137607affected
Red HatRed Hat OpenShift AI 3.3rhai/base-image-cuda-12.9-rhel9, 1789137636affected
Red HatRed Hat OpenShift AI 3.4rhoai/odh-mlserver-rhel9, 1786611800affected
Red HatRed Hat OpenShift AI 3.4rhoai/odh-th06-cpu-torch210-py312-rhel9, 1787076778affected
Red HatRed Hat OpenShift AI 3.4rhoai/odh-th06-cuda130-torch210-py312-rhel9, 1787077779affected
Red HatRed Hat OpenShift AI 3.4rhoai/odh-th06-rocm64-torch291-py312-rhel9, 1787076481affected
Weakness

CWE details

CWE-787

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Out-of-bounds Write

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