CVE-2026-22770Network attack vector

Process crash via uninitialized BilateralBlur pointer release

Published Jan 20, 2026 · Updated Jan 20, 2026

Invalid-pointer release in ImageMagick before 7.1.2-13 allows remote attackers to crash image-processing processes through BilateralBlur. AcquireBilateralTLS allocates one extra pointer slot but clears only the preceding slots, leaving the last slot uninitialized before buffer allocation. If a later allocation fails, DestroyBilateralTLS frees that uninitialized slot, causing invalid memory release and process termination.

CVSS severity6.5
Medium
EPSS probability0.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Invalid-pointer release in ImageMagick before 7.1.2-13 allows remote attackers to crash image-processing processes through BilateralBlur. AcquireBilateralTLS allocates one extra pointer slot but clears only the preceding slots, leaving the last slot uninitialized before buffer allocation. If a later allocation fails, DestroyBilateralTLS frees that uninitialized slot, causing invalid memory release and process termination.

The record

CVE
CVE-2026-22770
Published
Jan 20, 2026
Updated
Jan 20, 2026
Vendor
ImageMagick Studio LLC
Product
ImageMagick
Classifications
CWE-763, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 20, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 20, 2026Record 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=< 7.1.2-13

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

ImageMagick Studio LLC · ImageMagickversion=< 7.1.2-13

Published CVSS scores

6.5GitHub, Inc.CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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.

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

CWE-763Release of Invalid Pointer or Reference
T1499Endpoint Denial of Service

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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