CVE-2026-8813Public exploitNetwork attack vector

Host-process crash via zero-size ICC mluc records

Published May 19, 2026 · Updated May 19, 2026

Denial of service in ExifReader before 4.39.0 allows remote attackers to crash host applications via crafted images with ICC profiles. The src/icc-tags.js mluc parser trusts numRecords while a zero recordSize prevents offset advancement, repeatedly appending the same record. Exploitation requires a consuming application to parse an attacker-supplied image, causing heap exhaustion and host-process termination.

CVSS severity7.5
High
EPSS probability0.52%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in ExifReader before 4.39.0 allows remote attackers to crash host applications via crafted images with ICC profiles. The src/icc-tags.js mluc parser trusts numRecords while a zero recordSize prevents offset advancement, repeatedly appending the same record. Exploitation requires a consuming application to parse an attacker-supplied image, causing heap exhaustion and host-process termination.

The record

CVE
CVE-2026-8813
Published
May 19, 2026
Updated
May 19, 2026
Vendor
Mattias Wallander
Product
ExifReader
Classifications
CWE-1284, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 19, 2026CVE publishedPublication date reported by the CVE source.
  2. May 19, 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=0 <4.39.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Mattias Wallander · ExifReaderversion=0 <4.39.0

Published CVSS scores

8.7SnykCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P
7.5SnykCVSS: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-1284Improper Validation of Specified Quantity in Input
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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