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CVE-2018-11203

21
FAUCET Score

CVE-2018-11203 describes a division-by-zero vulnerability in the HDF5 1.10.2 library, specifically within the H5D__btree_decode_key function, affecting products from hdfgroup. This medium-severity vulnerability (CVSS 6.5) can be triggered remotely with low attack complexity, potentially leading to a denial-of-service condition for affected systems. There is currently no evidence of active exploitation, and no public exploit code or significant community discussion has been identified.

Impacted Technologies

VendorProductVersion(s)CPE
1.10.2CPE matchmatch criteria
cpe:2.3:a:hdfgroup:hdf5:1.10.2:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

6.5MEDIUM

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.74%
Probability of exploitation in next 30 days
EPSS Percentile
75.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0174 is in the 87th percentile among its peer group of 26,236 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (7)

redhatvendor investigatingvia redhat_api
Product: Red Hat OpenStack Platform 13 (Queens)Fixed in: hdf5
redhatend of lifevia redhat_api
Product: Red Hat OpenStack Platform 8 (Liberty)Fixed in: hdf5
redhatend of lifevia redhat_api
Product: Red Hat OpenStack Platform 9 (Mitaka)Fixed in: hdf5
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: hdf5
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux OpenStack Platform 7 (Kilo)Fixed in: hdf5
redhatend of lifevia redhat_api
Product: Red Hat OpenStack Platform 10 (Newton)Fixed in: hdf5
redhatend of lifevia redhat_api
Product: Red Hat OpenStack Platform 12 (Pike)Fixed in: hdf5

Vendor Advisories (1)

redhatCVE-2018-11203Low

hdf5: division by zero in H5D__btree_decode_key in H5Dbtree.c

May 16, 2018

References

github.com / Twi1ight/fuzzing-pocs/tree/master/hdf5
ExploitThird Party Advisory