Is CVE-2026-34912 actively exploited?

No active exploitation of CVE-2026-34912 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-34912 be exploited remotely?

Yes. CVE-2026-34912 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-34912?

CVE-2026-34912 has a CVSS score of 4.3 (MEDIUM).

HOME VULNERABILITIESCVE-2026-34912

MEDIUM

CVE-2026-34912

CWE-284Published: June 23, 2026· Updated: Jun 23, 2026

4.3

CVSS v3.1

EPSS:0.22%probability of exploitation in 30 daysPercentile:12.7th

Official Description

A missing access control check when linking banners or campaigns to a zone through the zone-include.php script of Revive Adserver 6.0.6 and earlier, or via its API allows a low‑privileged user could link their zones to banners or campaigns owned by other managers on the same instance, resulting in inconsistent ownership relationships. Ownership validation has been added to ensure that banners and campaigns can only be linked to zones managed by the same account.

NVD Source

Technical Analysis

CVE-2026-34912 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.