CVE-2026-82876

Katalog CVE

CVSS 8.2 · High EPSS 0,12%

Kerentanan Improper Verification of Cryptographic Signature. Skor CVSS 3.1 8.2 (High) menurut vulncheck.com.

Deskripsi (NVD)

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.

Rincian

Terbit di NVD

31 Agustus 2026

Terakhir diubah

10 September 2026

Status NVD

Awaiting Analysis

CVSS 3.1

8.2 (High), sumber vulncheck.com
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-347: Improper Verification of Cryptographic Signature

EPSS (30 hari)

0,12% peluang dieksploitasi; lebih tinggi dari 1,7% CVE lain

Produk dan versi terdampak

NVD belum mencantumkan data produk (CPE) untuk CVE ini. Produk yang terdampak biasanya disebut di deskripsi dan di advisory vendor pada daftar referensi.

Referensi dan perbaikan

• https://github.com/trulycrisp/psychite
• https://trulycrisp.github.io/drivefirmware/phison_s11/
• https://www.vulncheck.com/advisories/phison-ps3111-s11-controller-firmware-signature-verification-bypass