FlexNet Beacon Missing Authentication Vulnerability
- Exploited
- No known exploitation
- Fix
- Fixed in FlexNet Beacon 26.4.1 · FlexNet Manager Suite 2026 R1 IOK-2107311, 2025 R2 IOK-2107311, 2025 R1 IOK-2107311, 2025 R1
- Who is exposed
- Not reported
Do first: Upgrade to a fixed version: FlexNet Beacon 26.4.1 · FlexNet Manager Suite 2026 R1 IOK-2107311, 2025 R2 IOK-2107311, 2025 R1 IOK-2107311, 2025 R1.
- Last modified
- A 0-100 score for how much a CVE matters across the industry: exploitation, exposure, how widely the software is used, severity and whether a fix exists.What do these mean? →
- 24/100 · provisional
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
FlexNet Beacon, a component of Flexera One and FlexNet Manager Suite, has a missing authentication flaw. An attacker can remotely, without logging in, obtain Beacon policy and targeting information when anonymous web server access is enabled, which is the default setting.
Written by anthropic/claude-haiku-5.5 from the sources below. Verify against them.
Read the original description
Missing authentication in the FlexNet Beacon component of Flexera One and FlexNet Manager Suite allows unauthenticated remote attackers to obtain Beacon policy and targeting information when anonymous web server access is enabled (the default).
cve.now Index
- Exploitation?/40Unknown. No CISA SSVC exploitation rating yet
- Exposure17/25No login or user action needed per the CVSS vector, reachable over the network without a login · Unknown: No advisory context yet
- Reach?/20Unknown. No tracked technology or package matched
- Severity6.9/10CVSS 6.9
- No patch0/5No signal
What would change the score
- Would score about 69 if added to CISA KEV
- Would score about 64 if CISA's SSVC rates exploitation active
- Would score about 29 if advisories confirm default setups are exposed
What to do
Upgrade to a fixed version: FlexNet Beacon 26.4.1 · FlexNet Manager Suite 2026 R1 IOK-2107311, 2025 R2 IOK-2107311, 2025 R1 IOK-2107311, 2025 R1.
Timeline
- CVE published
- First seen by cve.now
Affected versions
- Flexera FlexNet Beacon
fixed in 26.4.1
- Flexera FlexNet Manager Suite
From 2026 R1 · fixed in 2026 R1 IOK-2107311; From 2025 R2 · fixed in 2025 R2 IOK-2107311; From 2025 R1 · fixed in 2025 R1 IOK-2107311; fixed in 2025 R1
Evidence 2
- Advisory
- Patch
Corrections
None so far.
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Questions about CVE-2026-110390
Is CVE-2026-110390 being exploited?
It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.Source: cve.now feed data
Which versions are affected by CVE-2026-110390?
FlexNet Beacon: before 26.4.1. FlexNet Manager Suite: from 2026 R1 before 2026 R1 IOK-2107311; from 2025 R2 before 2025 R2 IOK-2107311; from 2025 R1 before 2025 R1 IOK-2107311; before 2025 R1.Source: cve.now feed data
How do I fix CVE-2026-110390?
Upgrade to a fixed version: FlexNet Beacon 26.4.1 · FlexNet Manager Suite 2026 R1 IOK-2107311, 2025 R2 IOK-2107311, 2025 R1 IOK-2107311, 2025 R1.Source: cve.now feed data