9.8

CVE-2021-33027: sylabs singularity Insufficient Entropy

CVSS: 9.8v3.1CriticalModified
AliasesUBUNTU-CVE-2021-33027
Published 19-07-2021Last modified 03-08-2024
Open JSON

Vulnerability summary

CVE-2021-33027 is a critical (CVSS 9.8) Insufficient Entropy vulnerability in sylabs singularity. EPSS estimates a 1.29% chance of exploitation in the next 30 days, higher than 69.7% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.8/10
010
Critical · v3.1 (NVD)
EPSS score
1.29%
0%100%
Low · -0.04 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 19-07-2021
    PublishedVulnerability first disclosed.
  2. 03-08-2024
    Last modifiedVulnerability information updated.

Description

Sylabs Singularity Enterprise through 1.6.2 has Insufficient Entropy in a nonce.

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

1.29%

Chance of exploitation in the next 30 days

Percentile

70%

Versus all other CVEs

30-day change

-0.04 pp

From 1.32% on 19-09-2026

19-09-202619-10-2026
EPSS score
1.29%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Sylabs1 product
  • singularity≥ 1.2.0, < 1.2.6 | ≥ 1.3.0, < 1.3.4 | ≥ 1.4.0, < 1.4.4 | ≥ 1.5.0, < 1.5.4 | ≥ 1.6.0, < 1.6.3
Ubuntu1 product
  • singularityAll versions (No fix recorded)

2 vendors · 2 products

References

4 links