CVE-2020-10811: hdfgroup hdf5 Out-of-bounds Read
Vulnerability summary
CVE-2020-10811 is a medium (CVSS 5.5) Out-of-bounds Read vulnerability in hdfgroup hdf5. EPSS estimates a 1.48% chance of exploitation in the next 30 days, higher than 73.8% 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 over-read exists in the function H5O__layout_decode() located in H5Olayout.c. It allows an attacker to cause Denial of Service.
CVSS metrics
5 scores · 4 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
- OSV · AlpineEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
EPSS trend
Probability
1.48%
Chance of exploitation in the next 30 days
Percentile
74%
Versus all other CVEs
30-day change
No change 0.00 pp
From 1.48% 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.
Alpine1 product
- hdf5< 1.12.1-r0
Debian1 product
- hdf5< 1.10.8+repack-1
Hdfgroup1 product
- hdf5≤ 1.12.0
Ubuntu1 product
- hdf5All versions (No fix recorded)
4 vendors · 4 products
References
7 links- bitbucket.hdfgroup.org/projects/HDFFV/repos/hdf5/browse/release_docs/RELEASE.txtX Refsource MISCREPORTRelease NotesThird Party Advisory
- research.loginsoft.com/bugs/heap-buffer-overflow-in-h5olayout-c-hdf5-1-13-0/X Refsource MISCREPORTExploitThird Party Advisory
- github.com/Loginsoft-Research/hdf5-reports/tree/master/Vuln_2X Refsource MISCREPORTExploitThird Party Advisory
