CVE-2026-50205: Information Disclosure Vulnerability

CVE-2026-50205 Overview

CVE-2026-50205 is an information disclosure vulnerability where system log files record unencrypted Simple Mail Transfer Protocol (SMTP) authentication passwords alongside sensitive employee corporate identification data. The flaw falls under [CWE-532: Insertion of Sensitive Information into Log File]. Anyone with access to the log files can harvest valid SMTP credentials and personally identifiable employee data without further exploitation.

Critical Impact
Attackers who read application logs obtain working SMTP credentials and employee identifiers, enabling mail relay abuse, business email compromise, and downstream identity attacks.

Affected Products

Product information not specified in the published advisory
Refer to the Acer Community Knowledge Base Article for vendor-specific scope

Discovery Timeline

2026-06-04 - CVE-2026-50205 published to the National Vulnerability Database (NVD)
2026-06-04 - Last updated in the NVD database

Technical Details for CVE-2026-50205

Vulnerability Analysis

The application writes diagnostic and operational events to system log files. During these write operations, SMTP server authentication passwords appear in cleartext rather than being masked, redacted, or omitted. The same log entries also contain employee corporate identification data, linking credentials to identifiable individuals.

Logs are commonly retained on disk, forwarded to centralized log aggregators, and reviewed by administrators and support staff. Every party in that pipeline gains unintended access to plaintext secrets. The exposure persists for the lifetime of the log retention policy.

This class of weakness is tracked as [CWE-532]. It does not require memory corruption or protocol abuse. Reading a file is sufficient to extract the secrets.

Root Cause

The root cause is improper handling of sensitive data during logging. Authentication parameters passed to the SMTP client routine are serialized into log messages without sanitization. No filter strips password fields, and no policy prevents employee identifiers from appearing in the same context.

Attack Vector

An attacker who obtains read access to the log files extracts the plaintext SMTP password and associated employee data. Access paths include compromised administrator workstations, misconfigured log shippers, exposed backup archives, and shared support tooling. The CVSS vector lists a network attack vector with no privileges or user interaction required, indicating remotely reachable log surfaces in affected deployments.

The vulnerability is described in prose only. No verified proof-of-concept code is published. Refer to the Acer Community Knowledge Base Article for vendor technical details.

Detection Methods for CVE-2026-50205

Indicators of Compromise

Log entries containing SMTP AUTH LOGIN, AUTH PLAIN, or password= fields with non-redacted values
Outbound SMTP authentication attempts from hosts or IP addresses that do not normally send mail
Unexpected mail relay activity using accounts whose credentials appear in application logs
Access to log directories or log forwarders by accounts outside the normal administrative scope

Detection Strategies

Scan existing log archives with regular expressions for SMTP credential patterns and employee identifier formats
Alert on file reads against log paths by non-service accounts using endpoint telemetry
Correlate SMTP authentication failures and geographic anomalies against the population of credentials known to appear in logs
Add data loss prevention (DLP) rules on log shipper egress to flag password-shaped strings

Monitoring Recommendations

Monitor SIEM ingestion pipelines for fields that match credential patterns and quarantine the source
Track read access to log storage, backup snapshots, and centralized logging indices
Review SMTP server logs for authentications originating from unexpected source addresses
Audit accounts with access to log aggregation platforms on a recurring schedule

How to Mitigate CVE-2026-50205

Immediate Actions Required

Rotate all SMTP service account passwords that may have appeared in application logs
Purge or sanitize historical log files, archives, and backups containing the plaintext credentials
Restrict log file access to a least-privilege set of administrators and service accounts
Apply the vendor remediation referenced in the Acer Community Knowledge Base Article once available

Patch Information

The published NVD record does not enumerate specific fixed versions. Consult the vendor advisory linked above for patch availability, build identifiers, and upgrade instructions before deploying changes.

Workarounds

Configure logging frameworks to mask or omit password fields and personal identifiers before write
Encrypt log storage at rest and in transit, and restrict decryption keys to authorized personnel
Shorten log retention windows for components handling SMTP authentication
Route SMTP credentials through a secrets manager so the application no longer passes raw passwords to log-adjacent code paths

bash

# Configuration example
# Example log4j2 pattern that masks password parameters before write
# Replace values matching password=... with password=*****
<PatternLayout>
  <Pattern>%d %-5p %c{1} - %replace{%m}{(?i)(password|smtp_pass)=([^\s,&]+)}{$1=*****}%n</Pattern>
</PatternLayout>