CVE-2026-43823
⚠️ highSummary
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.
CVSS Score
7.5
High
EPSS Score
0.3
Exploit Probability
Published Date
2026-07-23
First Seen: 2026-09-05
📊 Relative Risk Intelligence
This CVE is Moderate Risk - more severe than 67.9% of all 353,061 vulnerabilities in our database.
#113,243
Above average severity
Severity Percentile
🎯 CISA SSVC Assessment Updated: Jul 23, 2026
🔍 Exploitation Status
Poc
Proof-of-concept available
⚙️ Automatable
YES
Can be exploited automatically
💥 Technical Impact
Partial
Limited system impact
SSVC data provided by
CISA
Last Modified
2026-09-04
Source
NVD 🔗
CVSS Vector 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE IDs (Weakness Types)