CVE-2022-35166Public exploit

Decoder hang via premature EOI marker

Published Aug 18, 2022 · Updated Aug 3, 2024

Infinite loop in JPEG::ReadInternal in libjpeg commit 842c7ba allows local users to hang a decoding process via a crafted JPEG file. Parsing an EOI marker as a frame header returns NULL, but StartParseFrame marks the header received and repeatedly returns NULL inside the decoding loop. A local user or application must open the crafted file; the demonstrated consequence is a persistent decoder hang without data disclosure or modification.

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

Infinite loop in JPEG::ReadInternal in libjpeg commit 842c7ba allows local users to hang a decoding process via a crafted JPEG file. Parsing an EOI marker as a frame header returns NULL, but StartParseFrame marks the header received and repeatedly returns NULL inside the decoding loop. A local user or application must open the crafted file; the demonstrated consequence is a persistent decoder hang without data disclosure or modification.

The record

CVE
CVE-2022-35166
Published
Aug 18, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-835, T1499.004
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 18, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 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 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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-835Loop with Unreachable Exit Condition ('Infinite Loop')
T1499.004Endpoint Denial of Service: Application 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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