CVE-2020-10809: hdfgroup hdf5 Out-of-bounds Write
Vulnerability summary
CVE-2020-10809 is a medium (CVSS 5.5) Out-of-bounds Write vulnerability in hdfgroup hdf5. EPSS estimates a 1.55% chance of exploitation in the next 30 days, higher than 75% of scored vulnerabilities. 2 public exploits are recorded.
Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 5 · Related 5Timeline
- 22-03-2020PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
An issue was discovered in HDF5 through 1.12.0. A heap-based buffer overflow exists in the function Decompress() located in decompress.c. It can be triggered by sending a crafted file to the gif2h5 binary. It allows an attacker to cause Denial of Service.
CVSS metrics
4 scores · 3 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
EPSS trend
Probability
1.55%
Chance of exploitation in the next 30 days
Percentile
75%
Versus all other CVEs
30-day change
No change 0.00 pp
From 1.55% 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
2 foundHdf5 Reports
Maturity: poc
Exploit Reference (research.loginsoft.com)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Known conditions: local access, no authentication, user interaction (CVSS vector). Other conditions: not stated in public data.
Debian1 product
- hdf5All versions (No fix recorded)
Hdfgroup1 product
- hdf5≤ 1.12.0
Ubuntu1 product
- hdf5All versions (No fix recorded)
3 vendors · 3 products
References
6 links- research.loginsoft.com/bugs/heap-overflow-in-decompress-c-hdf5-1-13-0/X Refsource MISCREPORTExploitThird Party Advisory
- github.com/Loginsoft-Research/hdf5-reports/tree/master/Vuln_1X Refsource MISCREPORTExploitThird Party Advisory
- bitbucket.hdfgroup.org/projects/HDFFV/repos/hdf5/browse/release_docs/RELEASE.txtX Refsource MISCREPORTRelease NotesThird Party Advisory
