CVE-2026-34548Public exploit

Process crash via unchecked signed-to-unsigned conversion

Published Mar 31, 2026 · Updated Mar 31, 2026

Undefined behavior in iccDEV before 2.3.1.6 allows local users to crash iccToXml by converting a crafted ICC profile to XML. In IccUtilXml.cpp, the XML conversion path implicitly converts a negative signed integer from profile data to icUInt32Number, turning -12 into 4294967284. The attacker must locally process a malformed profile; reported impact is limited to a process crash or other unpredictable process behavior.

CVSS severity6.2
Medium
EPSS probability0.16%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Undefined behavior in iccDEV before 2.3.1.6 allows local users to crash iccToXml by converting a crafted ICC profile to XML. In IccUtilXml.cpp, the XML conversion path implicitly converts a negative signed integer from profile data to icUInt32Number, turning -12 into 4294967284. The attacker must locally process a malformed profile; reported impact is limited to a process crash or other unpredictable process behavior.

The record

CVE
CVE-2026-34548
Published
Mar 31, 2026
Updated
Mar 31, 2026
Vendor
International Color Consortium
Product
iccDEV
Classifications
CWE-681
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 31, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 31, 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=< 2.3.1.6

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

International Color Consortium · iccDEVversion=< 2.3.1.6

Published CVSS scores

6.2GitHub, Inc.CVSS:3.1/AV:L/AC:L/PR:N/UI:N/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

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 exploitPublished

Weakness, pattern, technique

CWE-681Incorrect Conversion between Numeric Types

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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