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CVE-2026-56210

31
FAUCET Score

A heap-buffer-overflow read vulnerability was found in libaom, the reference AV1 codec implementation. A missing bounds check in the SVC (Scalable Video Coding) layer ID control function allows setting a spatial_layer_id exceeding the configured number of layers. This causes an out-of-bounds heap read of approximately 40,728 bytes when computing a layer context array index. An attacker who can influence SVC encoder parameters in a network-facing service could exploit this for information disclosure (heap content leak) or denial of service (segmentation fault from hitting unmapped memory).

First published: Jun 19, 2026Last modified: Jul 21, 2026

Impacted Technologies

VendorProductVersion(s)CPE
Red HatRed Hat AI Inference Server
All Versions ImpactedCNA affecteddefault affected
Red HatRed Hat Enterprise Linux AI 3.5 For RHEL 9
Range not provided by sourceCNA affecteddefault affected
Red HatRed Hat OpenShift AI (RHOAI)
All Versions ImpactedCNA affecteddefault affected
Red HatRed Hat Enterprise Linux 10
All Versions ImpactedCNA affecteddefault affected
Red HatRed Hat Enterprise Linux 9
All Versions ImpactedCNA affecteddefault affected

CVSS Data

CVSS version used by this source: 3.1

7.1HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
4.2
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.24%
Probability of exploitation in next 30 days
EPSS Percentile
15.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0024 is in the 16th percentile among its peer group of 14,875 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

security.access.redhat.com / data/csaf/v2/vex/2026/cve-2026-56210.json
access.redhat.com / errata/RHSA-2026:30814
access.redhat.com / errata/RHSA-2026:42875
access.redhat.com / security/cve/CVE-2026-56210
aomedia.googlesource.com / aom/+/a93ba0ffaa
bugzilla.redhat.com / show_bug.cgi
issues.chromium.org / issues/503975732