Is there a public exploit for CVE-2026-62333?

No public exploit for CVE-2026-62333 was found in Exploit-DB, Metasploit, Nuclei templates or public proof-of-concept repositories. That is an absence of evidence rather than proof that none exists.

How severe is CVE-2026-62333?

CVE-2026-62333 scores CVSS 8.7 (v4.0), rated high. EPSS puts the chance of exploitation in the next 30 days at 0.4%.

What does CVE-2026-62333 affect?

CVE-2026-62333 affects openvm-org openvm.

8.7 High

OpenVM is a performant and modular zkVM framework built for customization and extensibility.

CVE-2026-62333

OpenVM is a performant and modular zkVM framework built for customization and extensibility. Before 1.7.0 in the 1.x line and in affected 2.0 and 2.1 prereleases, MemoryMerkleAir does not forbid Merkle expansion rows at parentheight = 0 or below while expanddirection != 0. A malicious prover can fabricate a subtree below a memory leaf and swap digests inside that subtree to change the committed memory root without a corresponding memory operation. The fraudulent rows still balance against the Merkle and compression buses and require no memory-bus operation for the changed leaf. Because the memory Merkle root binds VM memory state across continuation segment boundaries, this affects the soundness of OpenVM proofs using persistent memory. This issue is fixed in versions 1.7.0, 2.0.0-rc.3 and 2.1.0-preview.

Assessment

CVSS: 8.7 (v4.0)
Severity: High
EPSS: 0.4% chance of exploitation in the next 30 days
Known exploited: Not listed in CISA KEV
Exploit availability: Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published: 30 October 2026
Last updated: 5 November 2026
Affected: openvm-org · openvm
Assigner: GitHub_M

CVSS vectorCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

At the source

EUVD (ENISA)

References

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