CVE-2021-36410Public exploit

Process crash via incorrect chroma bit-depth check

Published Jan 10, 2022 · Updated Aug 4, 2024

Stack-buffer overflow in strukturag libde265 1.0.8 allows attackers to crash dec265 by supplying a crafted HEVC file. During chroma motion compensation, generate_inter_prediction_samples tests the luma plane's bit depth instead of the chroma plane's, causing put_epel_hv_fallback to read two bytes before a stack buffer. The victim must cause dec265 or a consuming application to decode the file; the demonstrated consequence is an availability-only process crash.

CVSS severity5.5
Medium
EPSS probability0.86%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack-buffer overflow in strukturag libde265 1.0.8 allows attackers to crash dec265 by supplying a crafted HEVC file. During chroma motion compensation, generate_inter_prediction_samples tests the luma plane's bit depth instead of the chroma plane's, causing put_epel_hv_fallback to read two bytes before a stack buffer. The victim must cause dec265 or a consuming application to decode the file; the demonstrated consequence is an availability-only process crash.

The record

CVE
CVE-2021-36410
Published
Jan 10, 2022
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-787, T1204.002, T1499.004
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 10, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

4.3NIST NVDAV:N/AC:M/Au:N/C:N/I:N/A:P
5.5NIST NVDCVSS:3.1/AV:L/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.

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No observations available

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

Weakness, pattern, technique

CWE-787Out-of-bounds Write
T1204.002User Execution: Malicious File
T1499.004Endpoint Denial of Service: Application or System Exploitation

Public exploit references

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

Technologies

Your stack

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Your stack

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