CVE-2022-1623Public exploit

Application crash via reused LZW decoder state

Published May 11, 2022 · Updated Aug 3, 2024

Out-of-bounds read in LibTIFF at commit 3079627 allows local users to crash TIFF-processing applications with a crafted TIFF file. LZWDecode continues decoding the same strip or tile after an earlier read error, leaving decoder state that later dereferences an invalid code-table pointer. A user or application must open and decompress the crafted file; the demonstrated consequence is a segmentation-fault crash.

CVSS severity5.5
Medium
EPSS probability1.25%
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 LibTIFF at commit 3079627 allows local users to crash TIFF-processing applications with a crafted TIFF file. LZWDecode continues decoding the same strip or tile after an earlier read error, leaving decoder state that later dereferences an invalid code-table pointer. A user or application must open and decompress the crafted file; the demonstrated consequence is a segmentation-fault crash.

The record

CVE
CVE-2022-1623
Published
May 11, 2022
Updated
Aug 3, 2024
Vendor
LibTIFF
Product
LibTIFF
Classifications
CWE-125, T1499.004, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 11, 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?

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  1. Affected versionversion=3079627ea0dee150e6a208cec8381de611bb842b

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

LibTIFF · LibTIFFversion=3079627ea0dee150e6a208cec8381de611bb842b

Published CVSS scores

4.3NIST NVDAV:N/AC:M/Au:N/C:N/I:N/A:P
5.5GitLab Inc.CVSS: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 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
T1499.004Endpoint Denial of Service: Application or System Exploitation
T1204.002User Execution: Malicious 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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