CVE-2025-13718 Overview
IBM Sterling Partner Engagement Manager contains a cleartext transmission of sensitive information vulnerability that could allow a remote attacker to obtain sensitive information. The vulnerability exists in versions 6.2.3.0 through 6.2.3.5 and 6.2.4.0 through 6.2.4.2, where data transmitted through communication channels is not properly encrypted, enabling unauthorized actors to sniff network traffic and capture sensitive information in cleartext.
Critical Impact
Remote attackers can intercept sensitive business data transmitted through IBM Sterling Partner Engagement Manager without authentication, potentially exposing confidential partner communications and business transactions.
Affected Products
- IBM Sterling Partner Engagement Manager 6.2.3.0 through 6.2.3.5 (Essentials and Standard editions)
- IBM Sterling Partner Engagement Manager 6.2.4.0 through 6.2.4.2 (Essentials and Standard editions)
- Linux Kernel (as underlying platform)
Discovery Timeline
- 2026-03-13 - CVE-2025-13718 published to NVD
- 2026-03-18 - Last updated in NVD database
Technical Details for CVE-2025-13718
Vulnerability Analysis
This vulnerability is classified under CWE-319 (Cleartext Transmission of Sensitive Information), indicating that the application transmits sensitive data over a communication channel without proper encryption protections. IBM Sterling Partner Engagement Manager, which facilitates business partner communications and data exchanges, fails to adequately protect certain data transmissions.
The vulnerability is exploitable over the network without requiring authentication or user interaction. An attacker positioned to monitor network traffic between clients and the Sterling Partner Engagement Manager server can capture sensitive information as it traverses the network in cleartext form. This represents a significant confidentiality breach for organizations relying on this platform for partner relationship management and data sharing.
Root Cause
The root cause stems from improper implementation of secure communication protocols within IBM Sterling Partner Engagement Manager. Certain communication channels within the affected versions do not enforce TLS/SSL encryption or implement it incorrectly, allowing data to be transmitted without cryptographic protection. This design flaw exposes sensitive business data to potential interception by malicious actors with network access.
Attack Vector
The attack vector is network-based, requiring the attacker to have access to the network path between the client and the IBM Sterling Partner Engagement Manager server. This could be achieved through various means:
- Man-in-the-Middle (MITM) positioning on the local network
- Compromised network infrastructure (routers, switches, or wireless access points)
- Network monitoring from a privileged position within the same network segment
- ARP spoofing or DNS hijacking to redirect traffic through attacker-controlled systems
Once positioned, the attacker can passively capture network traffic using packet sniffing tools to extract sensitive information transmitted in cleartext. The attack requires no authentication and no user interaction, making it particularly dangerous in shared network environments.
Detection Methods for CVE-2025-13718
Indicators of Compromise
- Unusual network traffic patterns on ports used by IBM Sterling Partner Engagement Manager
- Detection of unencrypted HTTP traffic where HTTPS should be enforced
- Network monitoring alerts for cleartext sensitive data patterns in traffic analysis
- Anomalous ARP or DNS activity indicating potential MITM attempts
Detection Strategies
- Deploy network intrusion detection systems (NIDS) to identify cleartext sensitive data in transit
- Implement packet inspection rules to detect unencrypted communications to/from Sterling Partner Engagement Manager servers
- Monitor for unusual network reconnaissance activity targeting application ports
- Utilize TLS inspection to verify encryption is properly enforced on all communications
Monitoring Recommendations
- Enable comprehensive logging on IBM Sterling Partner Engagement Manager servers and review for connection anomalies
- Monitor network flow data for connections that should be encrypted but are transmitted in cleartext
- Implement alerting for network traffic analysis tools when sensitive data patterns are detected unencrypted
- Review firewall logs for unauthorized network monitoring or scanning activity
How to Mitigate CVE-2025-13718
Immediate Actions Required
- Apply the security patches provided by IBM for affected versions immediately
- Enforce TLS 1.2 or higher for all communications with IBM Sterling Partner Engagement Manager
- Implement network segmentation to limit exposure of application traffic
- Review and audit current encryption configurations on all Sterling Partner Engagement Manager instances
Patch Information
IBM has released a security advisory addressing this vulnerability. Organizations running affected versions should consult the IBM Security Advisory for detailed patch information and upgrade instructions. Upgrading to a patched version is the recommended remediation approach.
Workarounds
- Enable and enforce HTTPS/TLS on all communication endpoints until patches can be applied
- Implement network-level encryption such as IPsec for communications to and from affected servers
- Deploy web application firewalls (WAF) configured to detect and block cleartext sensitive data transmissions
- Isolate IBM Sterling Partner Engagement Manager instances in dedicated network segments with strict access controls
# Configuration example - Verify TLS configuration on application server
# Check current SSL/TLS configuration
openssl s_client -connect <server>:443 -tls1_2
# Verify certificate and encryption
openssl s_client -connect <server>:443 -showcerts
# Test for insecure protocols
nmap --script ssl-enum-ciphers -p 443 <server>
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
