CVE-2022-34526Public exploitNetwork attack vector

Process crash via unchecked codec-specific TIFF tags

Published Jul 29, 2022 · Updated Aug 3, 2024

Out-of-bounds write in LibTIFF 4.4.0 allows remote attackers to crash tiffsplit or tiffcrop by supplying a crafted TIFF file. _TIFFCheckFieldIsValidForCodec accepts codec-specific tags when their codec is unavailable, letting _TIFFVGetField write four bytes into a two-byte stack variable. The file must be processed by one of the utilities; the demonstrated consequence is a process crash rather than data disclosure or modification.

CVSS severity6.5
Medium
EPSS probability1.74%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds write in LibTIFF 4.4.0 allows remote attackers to crash tiffsplit or tiffcrop by supplying a crafted TIFF file. _TIFFCheckFieldIsValidForCodec accepts codec-specific tags when their codec is unavailable, letting _TIFFVGetField write four bytes into a two-byte stack variable. The file must be processed by one of the utilities; the demonstrated consequence is a process crash rather than data disclosure or modification.

The record

CVE
CVE-2022-34526
Published
Jul 29, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-787, T1204.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 29, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
6.5Canonical UbuntuCVSS:3.1/AV:N/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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-787Out-of-bounds Write
T1204.002Malicious File

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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