CVE-2026-21495

Process crash via zero TIFF RowsPerStrip

Published Jan 7, 2026 · Updated Jan 7, 2026

Division by zero in the iccDEV TIFF Image Reader before 2.3.1.2 allows local users to crash a host process with a crafted TIFF file. CTiffImg::Open accepts a zero RowsPerStrip value, and CTiffImg::ReadLine divides the current line number by that unchecked field. A user must cause an application to open the crafted file; the arithmetic fault interrupts only the process using the reader.

CVSS severity5.5
Medium
EPSS probability0.13%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Division by zero in the iccDEV TIFF Image Reader before 2.3.1.2 allows local users to crash a host process with a crafted TIFF file. CTiffImg::Open accepts a zero RowsPerStrip value, and CTiffImg::ReadLine divides the current line number by that unchecked field. A user must cause an application to open the crafted file; the arithmetic fault interrupts only the process using the reader.

The record

CVE
CVE-2026-21495
Published
Jan 7, 2026
Updated
Jan 7, 2026
Vendor
International Color Consortium
Product
iccDEV
Classifications
CWE-369, CWE-20, T1499
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Jan 7, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 7, 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=< 2.3.1.2

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

International Color Consortium · iccDEVversion=< 2.3.1.2

Published CVSS scores

5.5GitHubCVSS: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
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-369Divide By Zero
CWE-20Improper Input Validation
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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