CVE-2026-43823

EUVD-2026-48288
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
appleCNA
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
appleswift-crypto
𝑥
< 4.5.1
CNA
Common Weakness Enumeration
References
https://github.com/apple/swift-crypto/security/advisories/GHSA-8q93-f6xh-4f6f
https://github.com/apple/swift-crypto/security/advisories/GHSA-8q93-f6xh-4f6f