VulnSocial

CVE-2026-77477Patch

LOW

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Patch affected systems immediately

Recommended action window: Monitor and triage in normal cycle

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0.5/ 10 priority

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

STABLE

Threat summary

  • Patch or workaround signal is available
  • 2 mentions across 2 observed days
  • Momentum state: stable

What's happening

  • Patch or workaround mentioned in 1 signal
  • Technical details provided in 2 signals
  • Disclosure: 1 classified signal
  • Peaked 1d ago at 1 mentions (2026-09-03); latest day: 1
  • 2 total mentions across 2 days

Deep dive

Activity timeline2 mentions / 2d
00111Mentions · 2026-09-03: 1Mentions · 2026-09-04: 1Patch / Workaround · 2026-09-03: 1Technical Details · 2026-09-03: 1Technical Details · 2026-09-04: 109-0309-04
Signal classification2 categories
Patch
150.0%
Disclosure
150.0%
Referenced assets1 URL
Classification over time
DateTotalLabels
2026-09-031
Patch1
2026-09-041
Disclosure1
Full discourse2 posts
  • Aviatrix Threat Research Center@aviatrixtrc
    Disclosure

    TRC analysis shows CVE-2026-77477 allows attackers to intercept high-privilege console windows during OPC UA LDS installation. Attackers escalate privileges through the installer's elevated context, potentially pivoting to connected industrial systems. Runtime segmentation helps contain post-compromise activity in OT environments. #CloudSecurity 🔗 Full TRC analysis: https://aviatrix.ai/threat-research-center/opcfoundation-opc-ua-lds-cve-2026-77477-privilege-escalation

    Post summary

    The analysis discloses that CVE-2026-77477 is a privilege‑escalation vulnerability during OPC UA LDS installation, enabling attackers to intercept privileged console windows and pivot to industrial systems, with no reported exploitation or existing PoC.

    0000037
    2.0K followersView on X
  • NewsTongue@NewsTongueX
    Patch

    🔴 Critical vulnerability in OPC UA installer affects industrial control systems worldwide OPCFoundation OPC UA LocalDiscoveryServer (LDS) versions prior to 1.04.420 contain a privilege-escalation flaw (CVE-2026-77477) that allows local attackers with keyboard and display access to intercept a high-privilege console during installation and execute arbitrary commands. Affected sectors: Chemical, Energy, Food and Agriculture, Water and Wastewater, Critical Manufacturing. OPCFoundation recommends immediate update to version 1.04.420 or later. The vulnerability is not remotely exploitable; no public exploits have been reported. Lukas Schumaker of Rockwell Automation reported the flaw.

    Post summary

    The post reports a critical privilege‑escalation flaw (CVE‑2026‑77477) affecting OPC UA installers and urges users to apply the recommended patch, with no evidence of active exploitation or PoC.

    0000043
    851 followersView on X

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