CVE-2025-54873: RISC Zero Underconstrained Vulnerability: Division

Quick answers

Is CVE-2025-54873 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2025-54873 being exploited in the wild.

How severe is CVE-2025-54873?

Medium severity, with a CVSS score of 4, published 5 August 2025.

Which products and versions are affected?

risc0-circuit-rv32im (crates.io) SEMVER:introduced=2.0.0,fixed=3.0.0; risc0-circuit-rv32im-sys (crates.io) SEMVER:introduced=2.0.0,fixed=3.0.0; risc0-zkvm (crates.io) SEMVER:introduced=2.0.0,fixed=2.2.0.

Is there a fix for CVE-2025-54873?

Yes. risc0-circuit-rv32im (crates.io): upgrade to 3.0.0 or later; risc0-circuit-rv32im-sys (crates.io): upgrade to 3.0.0 or later; risc0-zkvm (crates.io): upgrade to 2.2.0 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

Am I affected by CVE-2025-54873?

Check whether you run risc0-circuit-rv32im (crates.io), risc0-circuit-rv32im-sys (crates.io) or risc0-zkvm (crates.io) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

• risc0-circuit-rv32im (crates.io): upgrade to 3.0.0 or later

  cargo update -p risc0-circuit-rv32im

• risc0-circuit-rv32im-sys (crates.io): upgrade to 3.0.0 or later

  cargo update -p risc0-circuit-rv32im-sys

• risc0-zkvm (crates.io): upgrade to 2.2.0 or later

  cargo update -p risc0-zkvm

Affected products

• risc0-circuit-rv32im (crates.io) SEMVER:introduced=2.0.0,fixed=3.0.0
• risc0-circuit-rv32im-sys (crates.io) SEMVER:introduced=2.0.0,fixed=3.0.0
• risc0-zkvm (crates.io) SEMVER:introduced=2.0.0,fixed=2.2.0

Identifiers

• CVE-2025-54873
• GHSA-f6rc-24x4-ppxp