CVE-2025-31965: HCL Software BigFix Remote Control · Authentication Bypass by Primary Weakness
Affects HCL Software BigFix Remote ControlSource CVE Database V5
Not known to be exploited · CVSS 8.2 High.
Data as of 26 Oct 2026, 08:30 UTC
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 11% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:H/A:LExploitation evidence
Disclosed: evidence found.
CVE published 29 Jul 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| HCL Software BigFix Remote Control | Affected
| Fixed in– |
AI-suggested
Given the absence of patches at the time of disclosure, European organizations should implement the following specific mitigations: 1) Restrict access to the BigFix Remote Control WebUI strictly to trusted administrative personnel using network segmentation and firewall rules, limiting exposure to internal networks only. 2) Enforce multi-factor authentication (MFA) for all users accessing the WebUI to reduce the risk of unauthorized access through compromised credentials. 3) Monitor and audit WebUI access logs rigorously for any anomalous or unauthorized access attempts, focusing on non-admin user activities. 4) Temporarily disable or limit non-admin user access to sensitive WebUI pages if possible, or apply custom access control policies to restrict visibility. 5) Employ endpoint detection and response (EDR) solutions to detect unusual activities stemming from compromised BigFix sessions. 6) Educate users about phishing and social engineering risks to minimize user interaction exploitation. 7) Prepare for rapid deployment of official patches once released by HCL and test them in controlled environments before production rollout. 8) Consider alternative remote control solutions if immediate risk reduction is necessary and patching is delayed.
Description
Improper access restrictions in HCL BigFix Remote Control Server WebUI (versions 10.1.0.0248 and lower) allow non-admin users to view unauthorized information on certain web pages.