Zcash Addresses Major Orchard Flaw Amidst $600 Support Stability

WHO:

NewsBTC - Zcash Foundation, Zcash developers, miners, infrastructure operators, Taylor Hornby (Zcash researcher), Mert Mumtaz (CEO of Helius), CipherScan (Zcash blockchain explorer).

WHAT:

NewsBTC - Zcash patched a critical vulnerability in its Orchard shielded pool that could have allowed double-spending.

Cointelegraph - The network briefly became unstable as miners upgraded.

NewsBTC - The first soft fork attempt faced technical challenges, but a revised patch was successfully activated on June 2.

NewsBTC - A full hard fork upgrade, NU6.2, was completed on June 3, restoring Orchard functionality.

NewsBTC - ZEC's price rallied over 8% intraday to retest $636 and has soared roughly 20% over the past two days.

NewsBTC - Zcash trades at $612, a 9.5% increase in the weekly timeframe.

WHERE:

NewsBTC - The vulnerability was in the Orchard shielded pool of the Zcash network.

WHEN:

NewsBTC - The vulnerability was discovered on May 29.

NewsBTC - The revised patch was activated on June 2.

NewsBTC - The full hard fork upgrade, NU6.2, was completed on June 3.

WHY:

NewsBTC - The vulnerability could have allowed invalid state transitions, potentially enabling double-spending within the Orchard pool.

HOW:

NewsBTC - Zcash developers, miners, and infrastructure operators coordinated privately to prepare a fix.

NewsBTC - The network upgrade required all node operators to update, which caused temporary instability.

(UPDATED June 4, 2026 08:22 UTC)

Zcash has successfully patched a critical vulnerability in its Orchard shielded pool that could have allowed for double-spending, following a coordinated effort by developers, miners, and infrastructure operators. The network experienced brief instability as miners upgraded, but a revised patch was activated on June 2, leading to the completion of a full hard fork upgrade, NU6.2, on June 3, which restored Orchard functionality. In the wake of these developments, ZEC's price rallied over 8% intraday to retest $636 and has seen a remarkable increase of about 20% over the past two days, currently trading at $612.