A heap-based buffer overflow vulnerability exists in the gif2h5 functionality of HDF5 Group libhdf5 1.10.4.

published 2022-08-22 4 y ago modified 2026-06-17 4 mo ago also EUVD-2022-30629

cvss: 7.8; version 3.0, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.7%; EPSS 0.7% chance of exploitation in 30 days, percentile 51%
public exploits: 0; none known

A heap-based buffer overflow vulnerability exists in the gif2h5 functionality of HDF5 Group libhdf5 1.10.4. A specially-crafted GIF file can lead to code execution. An attacker can provide a malicious file to trigger this vulnerability.

Patch / fix

distros 1 links 1

hdf5 Debian 14, Debian 13 1.10.10+repack-1

debian advisories DEBIAN-CVE-2022-26061

github.com/HDFGroup/hdf5#4785 pull request

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2022-26061 updated 2025-11-21 cvss 7.8

hdf5: HDF5 Group libhdf5 gif2h5 heap-based buffer overflow vulnerability

Red Hat OpenStack Platform 13 (Queens) hdf5 Red Hat OpenStack Platform 16.1 hdf5
not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation: Proof of concept is public
Automatable: no
Technical impact: total
Assessed: 2 y ago (2024-09-05)

Exploit prediction

0.66% chance of exploitation in the next 30 days, higher than 51% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

talosintelligence.com https://talosintelligence.com/vulnerability_reports/TALOS-2022-1487 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CNA	3.0	7.8	CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD	3.1	7.8	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

HDF5 Group libhdf5

Classification

Weakness

CWE-122 Heap-based Buffer Overflow
CWE-787 Out-of-bounds Write

References

github.com /HDFGroup/hdf5/pull/4785
talosintelligence.com /vulnerability_reports/TALOS-2022-1487
exploit, technical-description, third-party-advisory

Sources

CVE List CVE-2022-26061
NVD CVE-2022-26061

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary