5.5

CVE-2021-45832: hdfgroup hdf5 Uncontrolled Recursion

Modified
AliasesUBUNTU-CVE-2021-45832DEBIAN-CVE-2021-45832
Published 05-01-2022Last modified 04-08-2024

Vulnerability summary

CVE-2021-45832 is a medium (CVSS 5.5) Uncontrolled Recursion vulnerability in hdfgroup hdf5. EPSS estimates a 0.75% chance of exploitation in the next 30 days, higher than 55% of scored vulnerabilities. 1 public exploit is recorded.

Priority
Routine

Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.75%
0%100%
Low · +0.09 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits1github

Timeline

  1. 05-01-2022
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

Description

A Stack-based Buffer Overflow Vulnerability exists in HDF5 1.13.1-1 at at hdf5/src/H5Eint.c, which causes a Denial of Service (context-dependent).

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

0.75%

Chance of exploitation in the next 30 days

Percentile

55%

Versus all other CVEs

30-day change

Increase +0.09 pp

From 0.67% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

1 found
  • githubUnverified

    Hdf5

    Maturity: poc

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: local access, no authentication, user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu3 products
  • hdf5All versions (No fix recorded)
  • insighttoolkit5All versions (No fix recorded)
  • paraviewAll versions (No fix recorded)
Debian1 product
  • hdf5All versions (No fix recorded)
Hdfgroup1 product

3 vendors · 5 products

References

4 links