CVE-2021-41096: Use of a Broken or Risky Cryptographic Algorithm in com.mayank.rucky

Severity: medium (CVSS 5.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-09-27 · updated 2026-06-17
Weakness: CWE-327

Description

Rucky is a USB HID Rubber Ducky Launch Pad for Android. Versions 2.2 and earlier for release builds and versions 425 and earlier for nightly builds suffer from use of a weak cryptographic algorithm (RSA/ECB/PKCS1Padding). The issue will be patched in v2.3 for release builds and 426 onwards for nightly builds. As a workaround, one may disable an advance security feature if not required.

Affected products

mayankmetha Rucky: through 2.2

References

https://github.com/mayankmetha/Rucky/commit/5e3a477365009f488a73efd26a91168502de1b93
https://github.com/mayankmetha/Rucky/security/advisories/GHSA-32m7-456v-wgfw
https://github.com/mayankmetha/Rucky/commit/5e3a477365009f488a73efd26a91168502de1b93
https://github.com/mayankmetha/Rucky/security/advisories/GHSA-32m7-456v-wgfw

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