CVE-2022-0891Public exploitNetwork attack vector

Application crash via incorrect row-size calculation

Published Mar 9, 2022 · Updated Aug 2, 2024

Heap buffer overflow in LibTIFF 3.9.0 through 4.3.0 allows remote attackers to crash tiffcrop by supplying a crafted TIFF file. ExtractImageSection calculates the bytes in an image row with the wrong formula, causing a copy beyond the heap buffer during section extraction. A user or automated workflow must process the file with tiffcrop; published impacts include a crash and possible disclosure, with no reported integrity effect.

CVSS severity7.1
High
EPSS probability1.54%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap buffer overflow in LibTIFF 3.9.0 through 4.3.0 allows remote attackers to crash tiffcrop by supplying a crafted TIFF file. ExtractImageSection calculates the bytes in an image row with the wrong formula, causing a copy beyond the heap buffer during section extraction. A user or automated workflow must process the file with tiffcrop; published impacts include a crash and possible disclosure, with no reported integrity effect.

The record

CVE
CVE-2022-0891
Published
Mar 9, 2022
Updated
Aug 2, 2024
Vendor
LibTIFF
Product
LibTIFF
Classifications
CWE-787, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 9, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=>=3.9.0, <=4.3.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

LibTIFF · LibTIFFversion=>=3.9.0, <=4.3.0

Published CVSS scores

7.1GitLab Advisory DatabaseCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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
T1499.004Application or System Exploitation

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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