What’s Vulnerable › Vulnerabilities

CVE-2026-43988: Vanetza: Remote Denial of Service via Uncaught Exception in ASN.1/OER Parsing

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-05-26 · updated 2026-07-24
• Weakness: CWE-248

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.

Affected products

• riebl vanetza: before 62dfe58a8342512b6e1947d75821402ada524f1a; through 26.02

References

• https://github.com/riebl/vanetza/commit/62dfe58a8342512b6e1947d75821402ada524f1a
• https://github.com/riebl/vanetza/security/advisories/GHSA-j6cj-rp87-mfrx
• https://github.com/riebl/vanetza/security/advisories/GHSA-j6cj-rp87-mfrx

Get alerted when CVE-2026-43988 or the next vulnerability affects your stack