SB20260422120 - Multiple vulnerabilities in MySQL Enterprise Backup
Published: April 22, 2026
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 2 vulnerabilities.
1) Unsynchronized access to shared data in a multithreaded context (CVE-ID: CVE-2025-14017)
CWE-ID: CWE-567 - Unsynchronized Access to Shared Data in a Multithreaded Context
CVSSv4: CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Clear
The vulnerability allows an attacker to bypass implemented security restrictions.
The vulnerability exists due to an error when performing multithreaded LDAPS transfers (LDAP over TLS) with libcurl. Changing TLS options in one thread would inadvertently change them globally and therefore possibly also affect other concurrently setup transfers. For example, disabling certificate verification for a specific transfer could unintentionally disable the feature for other threads as well, leading to a MitM attacks against other websites.
2) Stack-based buffer overflow (CVE-ID: CVE-2025-15467)
CWE-ID: CWE-121 - Stack-based buffer overflow
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Amber
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error when parsing CMS AuthEnvelopedData structures that use AEAD ciphers such as AES-GCM, the IV (Initialization Vector) encoded in the ASN.1 parameters. A remote attacker can supply a specially crafted CMS message with an oversized IV, trigger a stack-based buffer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Remediation
Install update from vendor's website.