Is CVE-2024-34703 actively exploited?

No active exploitation of CVE-2024-34703 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2024-34703 be exploited remotely?

Yes. CVE-2024-34703 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2024-34703?

CVE-2024-34703 has a CVSS score of 7.5 (HIGH).

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HIGH

CVE-2024-34703

CWE-405Published: June 30, 2024· Updated: Jun 17, 2026

7.5

CVSS v3.1

Official Description

Botan is a C++ cryptography library. X.509 certificates can identify elliptic curves using either an object identifier or using explicit encoding of the parameters. Prior to versions 3.3.0 and 2.19.4, an attacker could present an ECDSA X.509 certificate using explicit encoding where the parameters are very large. The proof of concept used a 16Kbit prime for this purpose. When parsing, the parameter is checked to be prime, causing excessive computation. This was patched in 2.19.4 and 3.3.0 to allow the prime parameter of the elliptic curve to be at most 521 bits. No known workarounds are available. Note that support for explicit encoding of elliptic curve parameters is deprecated in Botan.

NVD Source

Technical Analysis

CVE-2024-34703 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 7.5.