VulnSocial

CVE-2026-21661Disclosure

LOWCVSS 8.4 · HIGH

Signal is active with 2 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

An Uncontrolled Search Path Element vulnerability in JohnsonControls AC2000 on Windows allows Leveraging/Manipulating Configuration File Search Paths. This issue affects AC2000: from 10.6 before release 10, from 11.0 before release 9, from 12 before release 3.

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0.0/ 10 priority

Sources & remediation

Other references
Weakness type (CWE)
CWE-427

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Threat summary

  • 2 mentions across 1 observed day

What's happening

  • Technical details provided in 2 signals
  • Disclosure: 1 classified signal
  • General: 1 classified signal
  • 2 total mentions across 1 day

Deep dive

Activity timeline2 mentions / 1d
01122Mentions · 2026-05-06: 2Technical Details · 2026-05-06: 205-06
Signal classification2 categories
Disclosure
150.0%
General
150.0%
Referenced assets2 URLs
Full discourse2 posts
  • CVE@CVEnew
    General

    CVE-2026-21661 Uncontrolled Search Path Element vulnerability in JohnsonControls AC2000 on Windows allows Leveraging/Manipulating Configuration File Search Paths. This issue affect… https://www.cve.org/CVERecord?id=CVE-2026-21661

    Post summary

    The text reports an Uncontrolled Search Path Element vulnerability (CVE-2026-21661) in JohnsonControls AC2000 on Windows, but provides no evidence of a PoC, exploit, active exploitation, or mitigation steps.

    0000096
    57.4K followersView on X
  • Aviatrix Threat Research Center@aviatrixtrc
    Disclosure

    TRC analysis shows attackers can exploit DLL hijacking in Johnson Controls CEM AC2000 to escalate privileges and move laterally through critical infrastructure networks. This vulnerability (CVE-2026-21661) affects access control systems across manufacturing, energy, and government sectors. Runtime segmentation helps contain post-compromise lateral movement. #ZeroTrust #Vulnerability 🔗 Full TRC analysis: https://aviatrix.ai/threat-research-center/johnson-controls-cem-ac2000-cve-2026-21661

    Post summary

    The analysis reveals a DLL hijacking flaw in Johnson Controls CEM AC2000 that could enable privilege escalation and lateral movement, but no PoC, patch, or evidence of active use is provided.

    0000043
    1.9K followersView on X

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