CVE-2023-2804Public exploitNetwork attack vector

Application crash via unchecked lossless JPEG samples

Published May 25, 2023 · Updated Jan 16, 2025

Heap-buffer overflow in libjpeg-turbo 3.0 beta2 allows attackers to crash a decoding application via a crafted lossless JPEG image. The lossless decompressor leaves 12-bit samples outside the valid range, and merged upsampling then uses those values as array indices. Exploitation requires the image to be opened or otherwise decompressed with the affected lossless-processing path; the documented consequence is process termination.

CVSS severity6.5
Medium
EPSS probability1.19%
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 libjpeg-turbo 3.0 beta2 allows attackers to crash a decoding application via a crafted lossless JPEG image. The lossless decompressor leaves 12-bit samples outside the valid range, and merged upsampling then uses those values as array indices. Exploitation requires the image to be opened or otherwise decompressed with the affected lossless-processing path; the documented consequence is process termination.

The record

CVE
CVE-2023-2804
Published
May 25, 2023
Updated
Jan 16, 2025
Vendor
The libjpeg-turbo Project
Product
libjpeg-turbo
Classifications
CWE-122, T1204.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 25, 2023CVE publishedPublication date reported by the CVE source.
  2. Jan 16, 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=Fixed in libjpeg-turbo v3.0 (beta2)

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The libjpeg-turbo Project · libjpeg-turboversion=Fixed in libjpeg-turbo v3.0 (beta2)

Published CVSS scores

6.5NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
6.5Red HatCVSS: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 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-122Heap-based Buffer Overflow
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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