CVE-2026-43823
HIGH
MEDIUM
Priority: 0.03
BB Relevance:
75/100
Published: 2026-07-23
Modified: 2026-10-24
First seen: 2026-10-29
Status: active
Attack Surface
Network
Low Complexity
No Auth
No Interaction
CVSS Vector Breakdown
AV:
Network
AC:
Low
PR:
None
UI:
None
S:
Unchanged
C:
None
I:
None
A:
High
Description
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.
Weakness Classification (1)
Affected Software (1)
| Vendor | Product | Version |
|---|---|---|
| apple | swift-crypto | 3.2.0 – 4.5.1 |
References & Advisories (1)
Vendor Advisory