CVE-2024-20925Network attack vector

Data modification via unchecked media-frame size arithmetic

Published Feb 17, 2024 · Updated Nov 4, 2025

Integer overflow in JavaFX media framing in Oracle Java SE 8u391 allows remote attackers to modify accessible data via crafted media. CVideoFrame calculates video-plane sizes and offsets without overflow checks, then derives pointers without verifying that each plane remains within its backing buffer. Exploitation requires user interaction with untrusted code in a sandboxed Java Web Start application or applet; trusted-code server deployments are not affected.

CVSS severity3.1
Low
EPSS probability0.56%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Integer overflow in JavaFX media framing in Oracle Java SE 8u391 allows remote attackers to modify accessible data via crafted media. CVideoFrame calculates video-plane sizes and offsets without overflow checks, then derives pointers without verifying that each plane remains within its backing buffer. Exploitation requires user interaction with untrusted code in a sandboxed Java Web Start application or applet; trusted-code server deployments are not affected.

The record

CVE
CVE-2024-20925
Published
Feb 17, 2024
Updated
Nov 4, 2025
Vendor
Oracle Corporation
Product
Java Platform, Standard Edition (Java SE)
Classifications
T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 17, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 4, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=Oracle GraalVM Enterprise Edition:20.3.12
  2. Affected versionversion=Oracle GraalVM Enterprise Edition:21.3.8
  3. Affected versionversion=Oracle Java SE:8u391

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Oracle Corporation · Java Platform, Standard Edition (Java SE)version=Oracle GraalVM Enterprise Edition:20.3.12; version=Oracle GraalVM Enterprise Edition:21.3.8; version=Oracle Java SE:8u391

Published CVSS scores

3.1Oracle CorporationCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N

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

T1203Exploitation for Client Execution

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

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Your stack

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