CVE-2022-26061Public exploit

Code execution via unchecked GIF data blocks

Published Aug 22, 2022 · Updated Sep 16, 2024

Heap-based buffer overflow in The HDF Group HDF5 1.10.4 allows context-dependent attackers to execute code via a crafted GIF file. In gifread.c, ReadGifImageDesc allocates GIFImage from image dimensions, then copies data-block bytes into it without checking the destination boundary. Exploitation requires a user or application to run gif2h5 on the file and can corrupt the heap, crash the process, or execute code in that process.

CVSS severity7.8
High
EPSS probability0.65%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap-based buffer overflow in The HDF Group HDF5 1.10.4 allows context-dependent attackers to execute code via a crafted GIF file. In gifread.c, ReadGifImageDesc allocates GIFImage from image dimensions, then copies data-block bytes into it without checking the destination boundary. Exploitation requires a user or application to run gif2h5 on the file and can corrupt the heap, crash the process, or execute code in that process.

The record

CVE
CVE-2022-26061
Published
Aug 22, 2022
Updated
Sep 16, 2024
Vendor
The HDF Group
Product
HDF5
Classifications
CWE-787, CWE-122, T1203
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 22, 2022CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 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=1.10.4

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

The HDF Group · HDF5version=1.10.4

Published CVSS scores

7.8Cisco TalosCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/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-787Out-of-bounds Write
CWE-122Heap-based Buffer Overflow
T1203Exploitation for Client Execution

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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