7.5highHigh
CVE-2026-43823
Apple Swift-Crypto
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.
Exploitation status
- A vendor advisory or patch reference has been published.
What the metrics mean
- It is reachable over a network, without needing local access.
- For an attacker who can reach it, no special conditions are needed to exploit it.
- To exploit it, no account is needed.
- Beyond that, no action by a user is required.
Scoring
- CVSS
- 7.5 (v3.1)
- Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H- Weakness
- CWE-415
- Assigned by
- product-security@apple.com
Dates
- Published
- 2026-07-23
- Last modified
- 2026-09-04
- Sources
- NVD
Affected products
- Apple Swift-Crypto3.2.0 - 4.5.1
As listed in the NVD configuration data. Not a statement about your estate.