CVE-2023-24752Public exploit

Decoder crash via NULL source-pointer read

Published Mar 1, 2023 · Updated Mar 7, 2025

NULL pointer dereference in libde265 1.0.10 allows attackers to crash an HEVC-decoding process via a crafted input file. During chroma motion compensation, ff_hevc_put_hevc_epel_pixels_8_sse passes a source pointer near address zero to _mm_loadl_epi64, which performs an eight-byte read and faults. A user must cause the file to be decoded; the demonstrated consequence is termination of the decoding process, not code execution.

CVSS severity5.5
Medium
EPSS probability0.29%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL pointer dereference in libde265 1.0.10 allows attackers to crash an HEVC-decoding process via a crafted input file. During chroma motion compensation, ff_hevc_put_hevc_epel_pixels_8_sse passes a source pointer near address zero to _mm_loadl_epi64, which performs an eight-byte read and faults. A user must cause the file to be decoded; the demonstrated consequence is termination of the decoding process, not code execution.

The record

CVE
CVE-2023-24752
Published
Mar 1, 2023
Updated
Mar 7, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-476, T1203
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 1, 2023CVE publishedPublication date reported by the CVE source.
  2. Mar 7, 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 vectorlocal
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

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-476NULL Pointer Dereference
T1203Exploitation for Client Execution

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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