8.4

CVE-2026-4048: progress software ecs connections manager Command Injection

CVSS: 8.4v3.1HighAnalyzed
Published 20-04-2026Last modified 22-04-2026
Open JSON

Vulnerability summary

CVE-2026-4048 is a high (CVSS 8.4) Command Injection vulnerability in progress software ecs connections manager. EPSS estimates a 2.98% chance of exploitation in the next 30 days, higher than 87% of scored vulnerabilities.

Overall risk
34/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.4/10
010
High · v3.1 (CVE.org)
EPSS score
2.98%
0%100%
Low · +0.84 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 20-04-2026
    PublishedVulnerability first disclosed.
  2. 22-04-2026
    Last modifiedVulnerability information updated.

Description

OS Command Injection Remote Code Execution Vulnerability in UI in Progress ADC Products allows an authenticated attacker with “All” permissions to execute arbitrary commands on the LoadMaster appliance by exploiting unsanitized input in a custom WAF rule file during the file upload process.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

2.98%

Chance of exploitation in the next 30 days

Percentile

87%

Versus all other CVEs

30-day change

+0.84 pp

From 2.13% on 20-09-2026

20-09-202620-10-2026
EPSS score
2.98%

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

Progress software4 products
Progress3 products

2 vendors · 7 products

References

1 links