CVE-2022-0908Public exploit

Application crash via zero-length null-pointer copy

Published Mar 11, 2022 · Updated Aug 2, 2024

NULL pointer dereference in LibTIFF 4.3.0 and earlier allows context-dependent attackers to crash applications via a crafted TIFF file. TIFFFetchNormalTag passes a null data pointer with a zero byte count to _TIFFmemcpy while reading a malformed directory tag. A user or application must process attacker-supplied TIFF content, and exploitation interrupts only the affected process.

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

NULL pointer dereference in LibTIFF 4.3.0 and earlier allows context-dependent attackers to crash applications via a crafted TIFF file. TIFFFetchNormalTag passes a null data pointer with a zero byte count to _TIFFmemcpy while reading a malformed directory tag. A user or application must process attacker-supplied TIFF content, and exploitation interrupts only the affected process.

The record

CVE
CVE-2022-0908
Published
Mar 11, 2022
Updated
Aug 2, 2024
Vendor
LibTIFF Project
Product
LibTIFF
Classifications
CWE-476, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 11, 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=<=4.3.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

LibTIFF Project · LibTIFFversion=<=4.3.0

Published CVSS scores

4.3NIST NVDAV:N/AC:M/Au:N/C:N/I:N/A:P
7.7GitLab Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
5.5NIST NVDCVSS: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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
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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