CVE-2026-6385Network attack vector

Application crash via signed subtitle-fragment bounds overflow

Published Apr 15, 2026 · Updated Apr 15, 2026

Memory corruption in FFmpeg within affected Red Hat AI products allows remote attackers to crash media-processing applications. The DVD subtitle parser applies a signed, overflowed fragment-reassembly calculation during bounds checking, permitting a heap out-of-bounds write while parsing a malicious MPEG-PS/VOB subtitle stream. Exploitation requires a user or automated workflow to process the file locally or through remote URL ingest; the grounded consequence is an application crash.

CVSS severity6.5
Medium
EPSS probability0.44%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Memory corruption in FFmpeg within affected Red Hat AI products allows remote attackers to crash media-processing applications. The DVD subtitle parser applies a signed, overflowed fragment-reassembly calculation during bounds checking, permitting a heap out-of-bounds write while parsing a malicious MPEG-PS/VOB subtitle stream. Exploitation requires a user or automated workflow to process the file locally or through remote URL ingest; the grounded consequence is an application crash.

The record

CVE
CVE-2026-6385
Published
Apr 15, 2026
Updated
Apr 15, 2026
Vendor
389 Directory Server
Product
Red Hat OpenShift AI
Classifications
CWE-190, T1204.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 15, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Affected versions are unavailable in this record. Check the vendor advisory for version and patch details.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

389 Directory Server · Red Hat OpenShift AIAffected versions are unavailable in this record.
389 Directory Server · Red Hat Enterprise Linux AIAffected versions are unavailable in this record.
389 Directory Server · Lightspeed CoreAffected versions are unavailable in this record.
389 Directory Server · Red Hat AI Inference ServerAffected versions are unavailable in this record.

Published CVSS scores

6.5Red HatCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-190Integer Overflow or Wraparound
T1204.002User Execution: Malicious File

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo