CVE-2021-45266Public exploitNetwork attack vector

Application crash via null animation value dereference

Published Dec 22, 2021 · Updated Aug 4, 2024

Null pointer dereference in GPAC 1.1.0 allows remote attackers to crash MP4Box during processing of crafted LASeR scene data. The lsr_read_anim_values_ex function dereferences a null list result while decoding malformed animateTransform animation values. Exploitation requires a GPAC workflow to process attacker-controlled scene data; the demonstrated consequence is a segmentation fault that terminates the process.

CVSS severity7.5
High
EPSS probability1.07%
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 GPAC 1.1.0 allows remote attackers to crash MP4Box during processing of crafted LASeR scene data. The lsr_read_anim_values_ex function dereferences a null list result while decoding malformed animateTransform animation values. Exploitation requires a GPAC workflow to process attacker-controlled scene data; the demonstrated consequence is a segmentation fault that terminates the process.

The record

CVE
CVE-2021-45266
Published
Dec 22, 2021
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-476, T1204.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 22, 2021CVE 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 vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.0NIST NVDAV:N/AC:L/Au:N/C:N/I:N/A:P
7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
T1204.002Malicious File

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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