# RUSTSEC-2026-0075 - All-Zero Key Generation on Catastrophic RNG Failure

Source: https://junglewise.ai/threats/rustsec-2026-0075-all-zero-key-generation-on-catastrophic-rng-failure-6eab7741  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-03-04  
License: CC BY 4.0 with a link back

Severity: medium · CVSS 4 · Published 2026-03-04

All-Zero Key Generation on Catastrophic RNG Failure

Technologies: [libcrux-ed25519 (crates.io)](https://junglewise.ai/threats/technologies/libcrux-ed25519). Vendors: [crates.io](https://junglewise.ai/threats/vendors/crates-io).

## Quick answers

**Is This vulnerability exploited in the wild?** No. Junglewise Threat Intelligence has no report of This vulnerability being exploited in the wild.

**How severe is This vulnerability?** Medium severity, with a CVSS score of 4, published 4 March 2026.

**Which products and versions are affected?** libcrux-ed25519 (crates.io) SEMVER:introduced=0.0.0-0,fixed=0.0.7.

**Is there a fix for This vulnerability?** Yes. libcrux-ed25519 (crates.io): upgrade to 0.0.7 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected?** Check whether you run libcrux-ed25519 (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

- libcrux-ed25519 (crates.io): upgrade to 0.0.7 or later

  ```sh
  cargo update -p libcrux-ed25519
  ```


## Affected products

- libcrux-ed25519 (crates.io) SEMVER:introduced=0.0.0-0,fixed=0.0.7

## Related threats

- [RUSTSEC-2026-0026 - Unnecessary clamping of seed reduces seed entropy to 251 bits](https://junglewise.ai/threats/cve-2026-76234-bug-fixes-in-libcrux-ecdh-libcrux-ed25519-libcrux-psq)
- [libcrux has All-Zero Key Generation Upon Catastrophic RNG Failure](https://junglewise.ai/threats/libcrux-has-all-zero-key-generation-upon-catastrophic-rng-failure-3a4b1033)