9.8

CVE-2026-56590

CVSS: 9.8v3.1CriticalAnalyzed
Published 2026-09-18Last modified 2026-09-18
Open JSON

Vulnerability summary

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.8/10
010
Critical · v3.1 (nvd)
EPSS score
0.29%
0%100%
Low · Change unavailable
KEVNot listed0 of 3 catalogs
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 2026-09-18
    PublishedVulnerability first disclosed.
  2. 2026-09-18
    Last modifiedVulnerability information updated.

Description

HCL BigFix Service Management is affected by an Unrestricted File Upload vulnerability due to improper file validation controls, which could allow an unauthenticated attacker to upload and execute malicious payloads, resulting in a complete server compromise.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.29%

Chance of exploitation in the next 30 days

Percentile

20%

Versus all other CVEs

30-day change

Change unavailable

Change unavailable

2026-09-182026-10-14
EPSS score
0.29%

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

Hcl software1 product
  • hcl bigfix service managementv27
Hcltech1 product
  • bigfix_service_management23 | 27

2 vendors · 2 products

References

1 links