CVE-2025-34027

The record

The Versa Concerto SD-WAN orchestration platform is vulnerable to an authentication bypass in the Traefik reverse proxy configuration, allowing at attacker to access administrative endpoints. The Spack upload endpoint can be leveraged for a Time-of-Check to Time-of-Use (TOCTOU) write in combination with a race condition to achieve remote code execution via path loading manipulation, allowing an unauthenticated actor to achieve remote code execution (RCE).This issue is known to affect Concerto from 12.1.2 through 12.2.0. Additional versions may be vulnerable.

Affected packages

Related vulnerabilities

• CVE-2026-53613 util-linux is a random collection of Linux utilities. CWE-367
• CVE-2026-53612 util-linux is a random collection of Linux utilities. CWE-367
• CVE-2026-67693 An issue in gnutls v.3.8.13 allows an attacker to obtain sensitive information via… CWE-367
• CVE-2026-106451 yawkat LZ4 Java provides LZ4 compression for Java. CWE-367
• CVE-2026-86805 A time-of-check to time-of-use (TOCTOU) race condition in the dynamic loader (ld.so) of… CWE-367
• CVE-2026-68488 A Time-of-check Time-of-use (TOCTOU) race condition leading to insecure symlink following… CWE-367
• CVE-2026-87554 Race condition in Chromoting in Google Chrome on on Windows prior to 153.0.8010.36… CWE-367
• CVE-2026-87523 Race condition in DataTransfer in Google Chrome prior to 153.0.8010.36 allowed a remote… CWE-367