Is CVE-2026-44500 actively exploited?

No active exploitation of CVE-2026-44500 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-44500 be exploited remotely?

Yes. CVE-2026-44500 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-44500?

CVE-2026-44500 has a CVSS score of 5.3 (MEDIUM).

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MEDIUM

CVE-2026-44500

CWE-770Published: May 8, 2026· Updated: May 8, 2026

5.3

CVSS v3.1

EPSS:0.05%probability of exploitation in 30 daysPercentile:14.5th

Official Description

ZEBRA is a Zcash node written entirely in Rust. Prior to zebrad version 4.4.0, prior to zebra-chain version 7.0.0, and prior to zebra-network version 6.0.0, several inbound deserialization paths in Zebra allocated buffers sized against generic transport or block-size ceilings before the tighter protocol or consensus limits were enforced. An unauthenticated or post-handshake peer could therefore force the node to preallocate and parse for orders of magnitude more data than the protocol intended, across headers messages, equihash solutions in block headers, Sapling spend vectors in V5/V4 transactions, and coinbase script bytes in blocks. This issue has been patched in zebrad version 4.4.0, zebra-chain version 7.0.0, and zebra-network version 6.0.0.

NVD Source

Technical Analysis

CVE-2026-44500 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.