Is CVE-2026-43988 actively exploited?

No active exploitation of CVE-2026-43988 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-43988 be exploited remotely?

Yes. CVE-2026-43988 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-43988?

CVE-2026-43988 has a CVSS score of 7.5 (HIGH).

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HIGH

CVE-2026-43988

CWE-248Published: May 26, 2026· Updated: Jun 1, 2026

7.5

CVSS v3.1

Official Description

Vanetza is an open-source implementation of the ETSI C-ITS protocol suite. In 26.02 and earlier, a denial-of-service vulnerability was identified in the ASN.1/OER parsing pipeline of Vanetza. When processing malformed network packets containing corrupted ASN.1/OER structures (e.g., invalid length fields or malformed certificate encoding), the ASN.1 wrapper (asn1c_wrapper.cpp) raises a std::runtime_error. This exception is not caught at the parsing boundary and propagates to std::terminate, resulting in process termination. This vulnerability is fixed with commit 62dfe58a8342512b6e1947d75821402ada524f1a.

NVD Source

Technical Analysis

CVE-2026-43988 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.