CVE-2021-37501: hdfgroup hdf5 Out-of-bounds Write
Vulnerability summary
CVE-2021-37501 is a high (CVSS 7.5) Out-of-bounds Write vulnerability in hdfgroup hdf5. EPSS estimates a 1.54% chance of exploitation in the next 30 days, higher than 75% of scored vulnerabilities. 1 public exploit is recorded.
Public exploit (GitHub, Date unknown)
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 4 · Related 3Timeline
- 03-02-2023PublishedVulnerability first disclosed.
- 26-03-2025Last modifiedVulnerability information updated.
Description
Buffer Overflow vulnerability in HDFGroup hdf5-h5dump 1.12.0 through 1.13.0 allows attackers to cause a denial of service via h5tools_str_sprint in /hdf5/tools/lib/h5tools_str.c.
CVSS metrics
4 scores · 4 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- NVDNIST7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
1.54%
Chance of exploitation in the next 30 days
Percentile
75%
Versus all other CVEs
30-day change
No change 0.00 pp
From 1.54% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
1 foundSomething Found
Maturity: poc
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Suse19 products
- hdf5_1_10_8-gnu-hpc&distro=SUSE Linux Enterprise Module for HPC 12< 1.10.8-3.18.1
- hdf5_1_10_8-gnu-hpc&distro=SUSE Linux Enterprise Module for HPC 15 SP3< 1.10.8-150300.4.9.1
- hdf5_1_10_8-gnu-hpc&distro=SUSE Linux Enterprise Module for HPC 15 SP4< 1.10.8-150400.3.6.1
- hdf5_1_10_8-gnu-hpc&distro=SUSE Linux Enterprise Module for Package Hub 15 SP4< 1.10.8-150400.3.6.1
- hdf5_1_10_8-gnu-mpich-hpc&distro=SUSE Linux Enterprise Module for HPC 15 SP3< 1.10.8-150300.4.9.1
Opensuse5 products
- hdf5_1_10_8-gnu-hpc&distro=openSUSE Leap 15.4< 1.10.8-150300.4.9.1
- hdf5_1_10_8-gnu-mpich-hpc&distro=openSUSE Leap 15.4< 1.10.8-150300.4.9.1
- hdf5_1_10_8-gnu-mvapich2-hpc&distro=openSUSE Leap 15.4< 1.10.8-150300.4.9.1
- hdf5_1_10_8-gnu-openmpi3-hpc&distro=openSUSE Leap 15.4< 1.10.8-150300.4.9.1
- hdf5_1_10_8-gnu-openmpi4-hpc&distro=openSUSE Leap 15.4< 1.10.8-150300.4.9.1
Debian1 product
- hdf5All versions (No fix recorded) | < 1.14.5+repack-1
Hdfgroup1 product
- hdf5≥ 1.12.0, ≤ 1.13.0
Ubuntu1 product
- hdf5All versions (No fix recorded)
5 vendors · 27 products
References
12 links- github.com/ST4RF4LL/Something_Found/blob/main/HDF5_v1.13.0_h5dump_heap_overflow.mdREPORTExploitThird Party Advisory
