CVE-2022-1122Public exploit

Utility crash via uninitialized filename pointer free

Published Mar 29, 2022 · Updated Nov 3, 2025

Improper initialization in OpenJPEG opj_decompress 2.4.0 and earlier allows local users to crash the utility through a large input directory. After filename-buffer allocation fails, src/bin/jp2/opj_decompress.c frees dirptr->filename without initializing that pointer. Exploitation requires a user to process an input directory large enough to exhaust the allocation, terminating only that opj_decompress process.

CVSS severity5.5
Medium
EPSS probability1.10%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper initialization in OpenJPEG opj_decompress 2.4.0 and earlier allows local users to crash the utility through a large input directory. After filename-buffer allocation fails, src/bin/jp2/opj_decompress.c frees dirptr->filename without initializing that pointer. Exploitation requires a user to process an input directory large enough to exhaust the allocation, terminating only that opj_decompress process.

The record

CVE
CVE-2022-1122
Published
Mar 29, 2022
Updated
Nov 3, 2025
Vendor
Université catholique de Louvain
Product
OpenJPEG
Classifications
CWE-824, CWE-665, T1499.004
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 29, 2022CVE publishedPublication date reported by the CVE source.
  2. Nov 3, 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=openjpeg2 version 2.4.0 and prior

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Université catholique de Louvain · OpenJPEGversion=openjpeg2 version 2.4.0 and prior

Published CVSS scores

5.5CanonicalCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
4.3NIST NVDAV:N/AC:M/Au:N/C:N/I:N/A:P

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-824Access of Uninitialized Pointer
CWE-665Improper Initialization
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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