CVE-2026-109399

Katalog CVE

CVSS 8.1 · High EPSS 0,21%

Kerentanan Improper Certificate Validation. Skor CVSS 3.1 8.1 (High) menurut vulncheck.com.

Deskripsi (NVD)

SWUpdate through 2026.05.1 contains an improper certificate validation vulnerability in crypto/swupdate_cms_verify_openssl.c that trusts untrusted X.509 certificates embedded in CMS SignedData for chain building. Attackers holding a signing key from a sibling intermediate under the same root can embed that intermediate in the signature to install malicious updates.

Rincian

Terbit di NVD

12 Oktober 2026

Terakhir diubah

12 Oktober 2026

Status NVD

Received

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-295: Improper Certificate Validation

EPSS (30 hari)

0,21% peluang dieksploitasi; lebih tinggi dari 10,4% 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/sbabic/swupdate
• https://github.com/sbabic/swupdate/blob/2026.05.1/crypto/swupdate_cms_verify_openssl.c
• https://github.com/sbabic/swupdate/commit/e66c5640664a31668926a24c0c84b6b6570dc0d9
• https://groups.google.com/g/swupdate/c/dsoMcGFnEns
• https://www.vulncheck.com/advisories/swupdate-through-2026.05.1-cms-signature-verification-bypass-via-embedded...