CVE-2022-43249Public exploitNetwork attack vector

Decoder crash via unchecked reference-image bit depth

Published Nov 2, 2022 · Updated May 2, 2025

Heap-buffer overflow in libde265 1.0.8 allows remote attackers to crash a decoder by supplying a crafted HEVC video file. The put_epel_hv_fallback motion-compensation path reads two bytes beyond an allocated image buffer when the reference and current images use different bit depths. Triggering the fault requires the crafted file to be decoded, so exploitation depends on user interaction or automated processing of untrusted video and results in decoder termination.

CVSS severity6.5
Medium
EPSS probability0.90%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap-buffer overflow in libde265 1.0.8 allows remote attackers to crash a decoder by supplying a crafted HEVC video file. The put_epel_hv_fallback motion-compensation path reads two bytes beyond an allocated image buffer when the reference and current images use different bit depths. Triggering the fault requires the crafted file to be decoded, so exploitation depends on user interaction or automated processing of untrusted video and results in decoder termination.

The record

CVE
CVE-2022-43249
Published
Nov 2, 2022
Updated
May 2, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-787
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 2, 2022CVE publishedPublication date reported by the CVE source.
  2. May 2, 2025Record 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 vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
6.5NIST NVDCVSS: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.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-787Out-of-bounds Write

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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