CVE-2026-14454Network attack vector

Worker-process termination via signed EXIF entry count

Published Jul 8, 2026 · Updated Jul 8, 2026

Denial of service in Tony Cook Imager before 1.033 allows remote attackers to terminate image-processing workers via crafted EXIF data. The tiff_load_ifd function stores the computed IFD size in a signed integer, so a large unsigned entry count becomes negative and triggers an allocation near the process address-space size. Any application that passes attacker-controlled images with EXIF metadata to the library exposes its worker process to termination; no data disclosure or modification is reported.

CVSS severity9.8
Critical
EPSS probability0.66%
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 Tony Cook Imager before 1.033 allows remote attackers to terminate image-processing workers via crafted EXIF data. The tiff_load_ifd function stores the computed IFD size in a signed integer, so a large unsigned entry count becomes negative and triggers an allocation near the process address-space size. Any application that passes attacker-controlled images with EXIF metadata to the library exposes its worker process to termination; no data disclosure or modification is reported.

The record

CVE
CVE-2026-14454
Published
Jul 8, 2026
Updated
Jul 8, 2026
Vendor
Tony Cook
Product
Imager
Classifications
CWE-196, CWE-789, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 8, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 8, 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 <1.033

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Tony Cook · Imagerversion=0 <1.033

Published CVSS scores

9.8CISA-ADPCVSS: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.

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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 exploitUnconfirmed

Weakness, pattern, technique

CWE-196Unsigned to Signed Conversion Error
CWE-789Memory Allocation with Excessive Size Value
T1499Endpoint Denial of Service

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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