SB2026010821 - Remote denial of service in CoreDNS
Published: January 8, 2026
Security Bulletin ID
SB2026010821
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Allocation of resources without limits or throttling (CVE-ID: CVE-2025-68151)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to application does not properly control consumption of internal resources in gRPC, HTTPS, and HTTP/3 implementations. A remote attacker can initiate multiple connections with the services to trigger resource exhaustion and perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.