CVE-2022-22844Public exploit

Utility crash via omitted custom-tag length

Published Jan 8, 2022 · Updated Aug 3, 2024

Out-of-bounds read in tiffset in LibTIFF 4.3.0 allows attackers to crash the utility through a crafted TIFF file. For pass-count ASCII tags, tiffset calls TIFFSetField with only the value pointer and omits the required 16-bit string length, so the variadic field setter supplies invalid arguments to _TIFFmemcpy and initiates an oversized read. Exploitation requires a user to run tiffset against the crafted file and set the custom tag; the demonstrated consequence is a process crash.

CVSS severity5.5
Medium
EPSS probability1.34%
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 read in tiffset in LibTIFF 4.3.0 allows attackers to crash the utility through a crafted TIFF file. For pass-count ASCII tags, tiffset calls TIFFSetField with only the value pointer and omits the required 16-bit string length, so the variadic field setter supplies invalid arguments to _TIFFmemcpy and initiates an oversized read. Exploitation requires a user to run tiffset against the crafted file and set the custom tag; the demonstrated consequence is a process crash.

The record

CVE
CVE-2022-22844
Published
Jan 8, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-125
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 8, 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 vectorlocal
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
4.3NIST NVDAV:N/AC:M/Au:N/C:N/I:N/A:P

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-125Out-of-bounds Read

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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