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CVE-2026-43823

7.5 high SSVC exploitation: poc Analyzed
NVD · CVE.org

When initializing an RSA public key from DER or PEM bytes throws an error, the EVP_PKEY* is double-freed: first in the catch block, then in the deinit. This can lead to a crash on future memory allocations. This double-free manifests when BoringSSL cannot decode the public key from the bytes provided. This vulnerability is addressed in swift-crypto version 4.5.1.

Fix

Patch, vendor advisory and mitigation references on NVD 2

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.

Change history 1

  1. First seenCVSS 7.5 · appleNVD modified 2026-10-24 13:10

Affected (CPE criteria) 1

  • cpe:2.3:a:apple:swift-crypto:*:*:*:*:*:swift:*:*

References 2