VulnSocial

CVE-2026-8312Disclosure(rockwellautomation / arena)

LOWCVSS 7.3 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Patch rockwellautomation arena systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

A security issue exists within Arena® Simulation due to a memory corruption vulnerability in the expmt.exe (Siman) component. The vulnerability stems from improper validation of user-supplied data, which can result in an out-of-bounds write. An attacker could leverage this vulnerability to execute arbitrary code in the context of the current process by convincing a user to open a malicious file.

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0.5/ 10 priority

Sources & remediation

Vendor / third-party advisories
Weakness type (CWE)
CWE-787

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

STABLE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • arena

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 (2026-07-15); latest day: 1
  • 2 total mentions across 2 days

Affected systems

Vendors
rockwellautomation
Products
arena

Deep dive

Activity timeline2 mentions / 2d
00111Mentions · 2026-07-15: 1Mentions · 2026-07-26: 1Patch / Workaround · 2026-07-26: 1Technical Details · 2026-07-15: 1Technical Details · 2026-07-26: 107-1507-26
Signal classification2 categories
Disclosure
150.0%
Patch
150.0%
Referenced assets1 URL
Classification over time
DateTotalLabels
2026-07-151
Disclosure1
2026-07-261
Patch1
Full discourse2 posts
  • TECHEPAGES@techepages
    Patch

    Rockwell Automation has disclosed four memory corruption vulnerabilities (CVE-2026-8085, CVE-2026-8312, CVE-2026-8313, CVE-2026-8314) in Arena Simulation affecting versions V17.00.00 and earlier. Organizations using Arena in OT or engineering environments should upgrade to V17.00.01, restrict model files from untrusted sources, and enforce application allowlisting on affected workstations.

    Post summary

    Rockwell Automation announced memory corruption bugs in Arena Simulation and recommends applying the V17.00.01 patch along with mitigations such as restricting model files and enforcing allowlisting.

    0000045
    33 followersView on X
  • DailyCVE@dailycve
    Disclosure

    🔴 Arena Simulation, Memory Corruption, #CVE-2026-8312 (High) -DC-Jul2026-1008 https://dailycve.com/arena-simulation-memory-corruption-cve-2026-8312-high-dc-jul2026-1008/

    Post summary

    Announcement of a high‑severity memory corruption vulnerability (CVE‑2026‑8312) in Arena Simulation, with limited technical details and no PoC or exploitation information provided.

    0000040
    219 followersView on X
CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
Approckwellautomationarena---

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