CVE-2026-30883

Heap overwrite via unchecked PNG profile length

Published Mar 9, 2026 · Updated Mar 9, 2026

Heap overflow in ImageMagick before 7.1.2-16 and before 6.9.13-41 allows local users to corrupt memory when encoding a PNG image. Magick_png_write_raw_profile calculates a 32-bit allocation length from twice the profile length plus overhead without first rejecting oversized values. Triggering the fault requires an extremely large image profile to reach the PNG encoder; published impact is bounded to memory corruption and service interruption.

CVSS severity5.7
Medium
EPSS probability0.12%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap overflow in ImageMagick before 7.1.2-16 and before 6.9.13-41 allows local users to corrupt memory when encoding a PNG image. Magick_png_write_raw_profile calculates a 32-bit allocation length from twice the profile length plus overhead without first rejecting oversized values. Triggering the fault requires an extremely large image profile to reach the PNG encoder; published impact is bounded to memory corruption and service interruption.

The record

CVE
CVE-2026-30883
Published
Mar 9, 2026
Updated
Mar 9, 2026
Vendor
ImageMagick Studio LLC
Product
ImageMagick
Classifications
CWE-119
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 9, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 9, 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=< 6.9.13-41
  2. Affected versionversion=>= 7.0.0, < 7.1.2-16

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

ImageMagick Studio LLC · ImageMagickversion=< 6.9.13-41; version=>= 7.0.0, < 7.1.2-16

Published CVSS scores

7.8NIST National Vulnerability DatabaseCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
5.7GitHub, Inc.CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:L/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)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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