Event Monitor Cyber
EM-20261105-APB2 VulnerabilityHigh severity

TrueNAS SCALE Vulnerability (CVE-2026-123033)

CVE-2026-123033

Share
Status
Developing

Since : signals keep joining.

First Signal
Nov 05 06:58 UTCC41 Red Hat Security Data
Page Born
Nov 05 07:17 UTCsecond source joined
Last Signal
Nov 05 07:17 UTC31 hours before snapshot
Sources
21 official · 1 research, news or crowd
Open For
29 hoursso far

Life Of This Page

  1. 1
    Born
    A second, independent source names it.
  2. 2
    Developing · Now
    New signals join; severity can move.
  3. 3
    Confirmed
    Not yet
    CISA KEV lists it, or exploitation in the wild is reported.
  4. 4
    Resolved
    Not yet
    Past the fix deadline and 14 days with no new signal.
  5. 5
    Archived
    Not yet
    30 days after resolved. Read only; the link keeps working. Reopens if it comes back.

The ID never changes, and earlier addresses keep working. A correction is logged, never overwritten. If two pages turn out to be one incident, the later one points to the earlier.

Vulnerability Lifecycle

  1. Disclosed: reached
    Nov 05 07:17 UTC
    C6 NVD published
  2. Scored: reached
    Nov 05 07:17 UTC
    CVSS 8.3 · EPSS 0.4%
  3. Exploited: not yet
    Not yet
    No exploitation reported
  4. Advisories: not yet
    Not yet
    None yet
  5. Vendor Response: reached
    Nov 05 06:58 UTC
    C41 published
  6. Resolved: not yet
    Not yet
    After 14 quiet days

Timeline

06:0012:0018:00BornC41 Red Hat Security DataC6 NVD CVE API 2.0

Point at a mark to read it. Squares are signals, colored by severity; every one is also listed under Signals.

Signals

  1. CVE-2026-123033 (CVSS 8.3) (opens source in a new tab) Authentication bypass in the HA heartbeat origin check in middlewared in TrueNAS SCALE before 25.10.8 (and in release trains before their respective fixes) allows an attacker on the same network segment to achieve… High severityDatabaseC6 NVD CVE API 2.0
  2. Red Hat: CVE-2026-123033 (important) (opens source in a new tab) middlewared: middlewared: Authentication bypass via improper HA heartbeat origin check High severityVendorC41 Red Hat Security Data