CVE-2022-25851Public exploitNetwork attack vector

Process hang via zero JPEG sampling factors

Published Jun 10, 2022 · Updated Sep 16, 2024

Infinite-loop denial of service in jpeg-js before 0.4.4 allows remote attackers to hang a consuming Node.js process with a crafted JPEG. The decoder leaves maximum sampling factors at zero for malformed component data, derives infinite MCU dimensions, and enters a nonterminating decodeAsScan loop. Exploitation requires a consuming application to decode attacker-controlled JPEG data, blocking that application's synchronous execution thread.

CVSS severity7.5
High
EPSS probability1.85%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Infinite-loop denial of service in jpeg-js before 0.4.4 allows remote attackers to hang a consuming Node.js process with a crafted JPEG. The decoder leaves maximum sampling factors at zero for malformed component data, derives infinite MCU dimensions, and enters a nonterminating decodeAsScan loop. Exploitation requires a consuming application to decode attacker-controlled JPEG data, blocking that application's synchronous execution thread.

The record

CVE
CVE-2022-25851
Published
Jun 10, 2022
Updated
Sep 16, 2024
Vendor
jpeg-js
Product
jpeg-js
Classifications
CWE-835, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 10, 2022CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 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?

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

  1. Affected versionversion=unspecified <0.4.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

jpeg-js · jpeg-jsversion=unspecified <0.4.4

Published CVSS scores

5.0NVDAV:N/AC:L/Au:N/C:N/I:N/A:P
7.5SnykCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.5NVDCVSS: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-835Loop with Unreachable Exit Condition ('Infinite Loop')
T1499.004Application or System Exploitation

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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