CVE-2026-24825 identifies a memory management vulnerability in the ydb-platform's ydb product, specifically within the contrib/libs/yajl modules and the yail_tree.C source files. The flaw is classified as CWE-401, indicating a missing release of memory after its effective lifetime, which typically results in memory leaks. This vulnerability affects versions of ydb up to and including 24.4.4.2. The issue arises because the software fails to free allocated memory once it is no longer needed, causing the application to consume increasing amounts of memory over time. According to the CVSS 4.0 vector, the vulnerability is remotely exploitable over the network without requiring authentication or user interaction, and it does not affect confidentiality or integrity but impacts availability by potentially causing resource exhaustion. The CVSS base score is 6.9, categorized as medium severity. No known exploits have been reported in the wild, but the risk remains due to the ease of exploitation and the potential for denial-of-service conditions. The vulnerability's presence in a core data platform component means that affected systems could experience degraded performance or outages if exploited. The absence of vendor patches at the time of reporting necessitates proactive monitoring and mitigation by users of the ydb platform.

For European organizations, the primary impact of CVE-2026-24825 lies in the potential degradation of system availability due to memory leaks. Organizations relying on ydb for critical data storage, processing, or cloud services may experience performance issues or service outages if the vulnerability is exploited. This could disrupt business operations, especially in sectors like finance, telecommunications, and public services where data platform reliability is crucial. The vulnerability does not directly compromise data confidentiality or integrity, but prolonged exploitation could lead to denial-of-service conditions, affecting service continuity. Given that exploitation requires no authentication or user interaction, attackers could remotely trigger memory exhaustion, increasing the risk for exposed systems. European entities with large-scale deployments of ydb or those integrating it into cloud-native environments are particularly at risk. The absence of known exploits reduces immediate threat but does not eliminate the risk of future attacks, especially as threat actors often target memory management flaws to cause disruptions.

1. Monitor memory usage of ydb instances closely to detect abnormal increases that may indicate exploitation of the memory leak. 2. Apply vendor patches promptly once released; maintain communication with ydb-platform for updates. 3. Implement resource limits and quotas at the container or OS level to prevent a single process from exhausting system memory. 4. Employ runtime application self-protection (RASP) or memory profiling tools to identify and mitigate leaks during operation. 5. Restrict network exposure of ydb services to trusted networks and use firewalls to limit access to reduce the attack surface. 6. Conduct regular security assessments and penetration tests focusing on memory management vulnerabilities. 7. Prepare incident response plans to quickly address potential denial-of-service conditions caused by memory exhaustion. 8. Consider deploying redundancy and failover mechanisms to maintain service availability in case of exploitation.