CVE-2025-0343 describes a denial-of-service vulnerability in Swift ASN.1, where parsing malformed BER/DER data can cause the application to crash due to incorrect assumptions about object forms. This flaw affects applications utilizing the Swift ASN.1 library for parsing such data, including scenarios like TLS certificate processing. With a CVSS score of 7.5 (High), the vulnerability is easily exploitable over the network with low complexity, leading to a complete loss of availability. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
| Swift Project | Swift ASN1 | >= 1.0.0, < 1.3.1CNA affecteddefault unaffected |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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