CVE-2026-82876 Phison PS3111-S11 controller firmware verifies RSA… — CVE Notify — TG.ME

🚨 CVE-2026-82876
Phison PS3111-S11 controller firmware verifies RSA signatures using a public modulus embedded within the firmware image itself rather than anchored in immutable storage. Attackers can generate arbitrary RSA key pairs, sign modified firmware with the private key, embed the matching modulus in the signature segment, and the controller accepts the tampered firmware as valid.

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GitHub
GitHub - trulycrisp/psychite: Phison S11/PS3111 firmware tools
Phison S11/PS3111 firmware tools. Contribute to trulycrisp/psychite development by creating an account on GitHub.
September 2, 2026 5