Zcash (ZEC) experienced a four-hour block production outage, prompting the Zcash Foundation to release emergency patches addressing a critical vulnerability in the Orchard Action scheme. The foundation deployed versions Zebra 4.5.3 and 5.0.0 to resolve the operational flaw, though user privacy remained uncompromised throughout the incident.
The outage highlighted a stability issue within Zcash's privacy-focused infrastructure. According to the foundation's statement, the bug affected the Orchard Action mechanism—a core component of the privacy protocol—but did not expose encrypted user data or compromise the confidentiality guarantees central to the network's design.
The rapid deployment of multiple version releases signals the severity with which the foundation treated the vulnerability. Network participants were advised to upgrade to the patched versions to restore normal block production and prevent recurrence of similar stalling events.