The vulnerability identified as CVE-2026-28212 affects the Firebird SQL database management system. It is classified as a high-severity issue with a CVSS score of 7.5. This vulnerability allows unauthenticated attackers to send specially crafted network packets to the server, leading to a null pointer dereference and subsequent server crash. The risk to organizations includes potential downtime and service disruption, making it imperative for defenders to address this vulnerability in their systems.
This issue has been patched in Firebird versions 6.0.0, 5.0.4, 4.0.7, and 3.0.14. Organizations using earlier versions should prioritize upgrading to mitigate the risk of exploitation. The vulnerability has a known attack vector over the network, with low complexity and no privileges required for exploitation.
Given the nature of this vulnerability, it is crucial for organizations to implement the necessary patches immediately. The potential impact on availability can be significant if not promptly addressed.
The urgency for defenders is high, and they should ensure that all systems are updated to the latest versions to prevent potential disruptions.
Vulnerability Details
The official description of CVE-2026-28212 states that when processing an op_slice network packet, the Firebird server passes an unprepared structure containing a null pointer to the SDL_info() function. This results in a null pointer dereference leading to a server crash. The affected versions include all prior to 6.0.0, 5.0.4, 4.0.7, and 3.0.14.
The vulnerability is classified under CWE-476, indicating a null pointer dereference. The CVSS score of 7.5 indicates a high severity, emphasizing the need for immediate attention.
Technical Analysis
The root cause of this vulnerability lies in the handling of network packets by the Firebird server. When specific packets are received, the server attempts to process them without properly validating the data structure, leading to a null pointer dereference.
The attack vector is categorized as network-based, allowing attackers to exploit the vulnerability remotely. The complexity is low, as no authentication is required to trigger the flaw. Additionally, the attack does not necessitate user interaction.
The impact on availability is high, as it can lead to a complete server crash, disrupting services reliant on the Firebird database. Confidentiality and integrity impacts are assessed to be none.
Risk & Impact Analysis
Organizations utilizing Firebird in critical applications face significant risks due to this vulnerability. An attacker can exploit this weakness to crash the database server, leading to potential downtime and loss of service availability. The blast radius is considerable, especially for organizations that rely on Firebird for handling sensitive data or critical transactions.
The urgency for patching is underscored by the high CVSS score assigned to this vulnerability. Organizations should address this vulnerability in their priority patch cycle to ensure operational continuity and data integrity.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The affected versions of Firebird include all prior to 6.0.0, 5.0.4, 4.0.7, and 3.0.14. Organizations should ensure they are running the patched versions to avoid exploitation.
Mitigation & Remediation
Organizations should upgrade to Firebird versions 6.0.0, 5.0.4, 4.0.7, or 3.0.14 to mitigate this vulnerability. If immediate patching is not possible, consider implementing network controls to restrict access to the Firebird server.
Regular security assessments, such as penetration testing, should be conducted to identify and mitigate similar vulnerabilities in other systems.
Detection Guidance
Monitoring logs for anomalies related to packet processing can help detect attempts to exploit this vulnerability. Look for repeated failed connection attempts and unusual traffic patterns targeting the Firebird server.
AppSecure Threat Intelligence Insight
The significance of CVE-2026-28212 lies in its potential to disrupt database operations. It highlights the importance of rigorous testing and validation of input data in networked applications. Security teams should learn from this vulnerability and prioritize proactive measures to enhance application security.
Organizations can benefit from implementing a robust vulnerability management program and continuous security assessments to adapt to evolving threats.
This vulnerability serves as a reminder of the need for organizations to maintain updated systems and to regularly review their security posture.
To learn more about effective security strategies, organizations should consider penetration testing methodology and best practices.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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