CVE-2026-43823 (GCVE-0-2026-43823)

Vulnerability from cvelistv5 – Published: 2026-07-23 14:33 – Updated: 2026-07-23 18:12
VLAI
Summary
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.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-23 18:12 UTC
CWE
  • 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.
  • CWE-415 - Double Free
Assigner
apple CNA under the mitre root
CNA scorecard E 37/100 over 992 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Apple swift-crypto Affected: 0 , < 4.5.1 (custom)
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

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