CVE-2026-35504 — PowerSYSTEM Center email notification service is affected
CVE-2026-35504 — PowerSYSTEM Center email notification service is affected by a CRLF injection vulnerability when using SMTPS communication.
What This Means For You
- If your environment is affected by CWE-93, review your exposure and prioritize patching based on your environment. Monitor vendor advisories for CVE-2026-35504 updates and patches.
Related ATT&CK Techniques
🛡️ Detection Rules
2 rules · 6 SIEM formats2 detection rules auto-generated for this incident, mapped to MITRE ATT&CK. Sigma YAML is free — export to any SIEM format via the Intel Bot.
CVE-2026-35504 - PowerSYSTEM Center CRLF Injection Attempt
title: CVE-2026-35504 - PowerSYSTEM Center CRLF Injection Attempt
id: scw-2026-05-12-ai-1
status: experimental
level: high
description: |
Detects potential CRLF injection attempts targeting the PowerSYSTEM Center email notification service. This rule specifically looks for the presence of carriage return and line feed characters (\r\n) within email bodies, which is indicative of the vulnerability described in CVE-2026-35504 when using SMTPS.
author: SCW Feed Engine (AI-generated)
date: 2026-05-12
references:
- https://shimiscyberworld.com/posts/nvd-CVE-2026-35504/
tags:
- attack.initial_access
- attack.t1190
logsource:
category: email
detection:
selection:
EmailBody|contains:
- '\r
'
condition: selection
falsepositives:
- Legitimate administrative activity
Source: Shimi's Cyber World · License & reuse
Indicators of Compromise
| ID | Type | Indicator |
|---|---|---|
| CVE-2026-35504 | vulnerability | CVE-2026-35504 |
| CWE-93 | weakness | CWE-93 |
Written by SCW Vulnerability Desk
Source & Attribution
| Source Platform | NVD |
| Channel | National Vulnerability Database |
| Published | May 13, 2026 at 00:16 UTC |
This content was curated and summarized by Shimi's Cyber World for informational purposes. It is not copied or republished in full. All intellectual property rights remain with the original author and source.
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