8.1

CVE-2021-43978: allegro Insufficiently Protected Credentials

CVSS: 8.1v3.1HighModified
Published 08-12-2021Last modified 30-05-2025
Open JSON

Vulnerability summary

CVE-2021-43978 is a high (CVSS 8.1) Insufficiently Protected Credentials vulnerability in allegro. EPSS estimates a 0.77% chance of exploitation in the next 30 days, higher than 54.7% of scored vulnerabilities.

Overall risk
33/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.1/10
010
High · v3.1 (NVD)
EPSS score
0.77%
0%100%
Low · +0.02 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 08-12-2021
    PublishedVulnerability first disclosed.
  2. 30-05-2025
    Last modifiedVulnerability information updated.

Description

Allegro WIndows 3.3.4152.0, embeds software administrator database credentials into its binary files, which allows users to access and modify data using the same credentials.

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

0.77%

Chance of exploitation in the next 30 days

Percentile

55%

Versus all other CVEs

30-day change

+0.02 pp

From 0.74% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.77%

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

Allegro1 product

1 vendor · 1 product

References

3 links