CVE-2024-55910 is a server-side request forgery (SSRF) vulnerability identified in IBM Concert Software versions 1.0.0 through 1.0.5. SSRF vulnerabilities occur when an attacker can abuse a server to send crafted requests to internal or external systems that the server can access, potentially bypassing firewall restrictions or network segmentation. In this case, the vulnerability allows an authenticated attacker to send unauthorized requests from the IBM Concert Software system itself. This can enable attackers to perform network enumeration by probing internal network resources that are otherwise inaccessible externally. Additionally, SSRF can be leveraged as a pivot point for further attacks such as accessing sensitive internal services, exploiting trust relationships, or exfiltrating data. The CVSS 3.1 base score for this vulnerability is 6.5 (medium severity), with the vector indicating network attack vector (AV:N), low attack complexity (AC:L), no privileges required (PR:N), no user interaction (UI:N), unchanged scope (S:U), and low impact on confidentiality and integrity (C:L, I:L) with no impact on availability (A:N). Notably, the description states that the attacker must be authenticated, which conflicts with the CVSS vector indicating no privileges required; this discrepancy suggests that some level of authentication is needed to exploit the vulnerability. No known public exploits or patches are currently available. The vulnerability was published on May 2, 2025, and is categorized under CWE-918, which relates to SSRF issues. IBM Concert Software is a product used for collaboration and event management, often deployed in enterprise environments, potentially including critical infrastructure and business operations.

For European organizations using IBM Concert Software, this SSRF vulnerability poses a moderate risk. Successful exploitation could allow attackers to map internal networks, identify vulnerable internal services, and potentially access sensitive information not exposed to the internet. This could lead to further lateral movement within the network, data breaches, or disruption of business processes. Given that the vulnerability requires authentication, the risk is somewhat mitigated by the need for valid credentials; however, if credentials are compromised or weakly protected, the attack surface increases significantly. Organizations in sectors such as finance, government, healthcare, and critical infrastructure that rely on IBM Concert Software for coordination and communication could face operational disruptions or data confidentiality breaches. The lack of known exploits in the wild reduces immediate risk but does not eliminate the threat, especially as attackers may develop exploits over time. The medium CVSS score reflects moderate confidentiality and integrity impacts without availability loss, indicating that while the system may continue functioning, sensitive data and internal network security could be compromised.

To mitigate this vulnerability effectively, European organizations should: 1) Immediately verify and restrict access to IBM Concert Software instances, ensuring that only authorized and trusted users have authentication credentials. 2) Implement strong authentication mechanisms such as multi-factor authentication (MFA) to reduce the risk of credential compromise. 3) Monitor and audit logs for unusual request patterns originating from the IBM Concert Software server that could indicate SSRF exploitation attempts. 4) Apply network segmentation and firewall rules to limit the IBM Concert Software server's ability to initiate requests to sensitive internal resources, thereby reducing the impact of SSRF. 5) Engage with IBM support channels to obtain patches or workarounds as they become available, and plan for timely patch deployment. 6) Conduct internal penetration testing focusing on SSRF vectors to identify and remediate any additional weaknesses. 7) Educate administrators and users about the risks of SSRF and the importance of credential security. These steps go beyond generic advice by emphasizing network-level controls, active monitoring, and credential hardening specific to the context of this vulnerability.