CVE-2026-63357

LOWCVSS 5.3 · MEDIUM

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

Affected devices do not properly sanitize calculated signal data contained in imported calculated signal files before rendering it on the Trace page. This could allow an attacker to social engineer an authorized user who holds the function right “Read diagnostics” into importing a specially crafted file. Successful exploitation could allow attacker-controlled JavaScript to execute in the user’s browser session and perform PLC operations through the web server within the scope of the user’s authorization.

0.0/ 10 priority

Sources & remediation

Weakness type (CWE)
CWE-79

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Threat summary

  • 2 mentions across 1 observed day

What's happening

  • 2 total mentions across 1 day

Deep dive

Activity timeline2 mentions / 1d
01122Mentions · 2026-10-16: 210-16
Full discourse2 posts
  • Wold Labs@WoldLabs

    A trace file meant to diagnose a production line should not be able to operate the PLC. Siemens SSA-591731 (Oct 13): 8 XSS flaws in the SIMATIC S7-1500 web server Trace page, CVE-2026-63350 through CVE-2026-63357. https://t.co/hxzcrYFxOo

    1000040
    4 followersView on X
  • Wold Labs@WoldLabs

    A trace file meant to diagnose a production line should not be able to operate the PLC. Siemens SSA-591731 (Oct 13): 8 XSS flaws in the SIMATIC S7-1500 web server Trace page, CVE-2026-63350 through CVE-2026-63357. https://t.co/JoVFpXQNAS

    0001033
    4 followersView on X

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