CVE-2018-11203: hdfgroup hdf5 Divide By Zero
Vulnerability summary
CVE-2018-11203 is a medium (CVSS 6.5) Divide By Zero vulnerability in hdfgroup hdf5. EPSS estimates a 1.70% chance of exploitation in the next 30 days, higher than 77.1% of scored vulnerabilities. 1 public exploit is recorded.
Not severe (CVSS 6.5, network access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 4 · Related 4Timeline
- 16-05-2018PublishedVulnerability first disclosed.
- 16-09-2024Last modifiedVulnerability information updated.
Description
A division by zero was discovered in H5D__btree_decode_key in H5Dbtree.c in the HDF HDF5 1.10.2 library. It could allow a remote denial of service attack.
CVSS metrics
4 scores · 3 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated6.5MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated6.5MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
EPSS trend
Probability
1.70%
Chance of exploitation in the next 30 days
Percentile
77%
Versus all other CVEs
30-day change
Decrease -0.03 pp
From 1.73% 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 foundFuzzing Pocs
Maturity: poc
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, no authentication, user interaction (CVSS vector). Other conditions: not stated in public data.
Debian1 product
- hdf5< 1.10.4+repack-1
Hdfgroup1 product
- hdf51.10.2
Ubuntu1 product
- hdf5All versions (No fix recorded)
3 vendors · 3 products
