CVE-2024-53695: qnap systems inc. hbs 3 hybrid backup sync Classic Buffer Overflow

Vulnerability summary

CVE-2024-53695 is a critical (CVSS 9.1) Classic Buffer Overflow vulnerability in qnap systems inc. hbs 3 hybrid backup sync. EPSS estimates a 0.52% chance of exploitation in the next 30 days, higher than 43.2% of scored vulnerabilities.

Timeline

1. 07-03-2025
   PublishedVulnerability first disclosed.
2. 07-03-2025
   Last modifiedVulnerability information updated.

Description

A buffer overflow vulnerability has been reported to affect HBS 3 Hybrid Backup Sync. If exploited, the vulnerability could allow remote attackers to modify memory or crash processes. We have already fixed the vulnerability in the following version: HBS 3 Hybrid Backup Sync 25.1.4.952 and later

• CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer.
• CWE-121Stack-based Buffer OverflowA stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).