Vanetza V2X Vulnerability: CVE-2026-37554 Allows Remote DoS
The National Vulnerability Database has identified CVE-2026-37554, a critical denial-of-service vulnerability affecting Vanetza V2X software, specifically version v26.02. Attackers can remotely trigger this flaw by sending specially crafted GeoNetworking packets. The vulnerability stems from improper exception handling within the GeoNetworking packet processing pipeline. OpenSSL exceptions related to Elliptic Curve Cryptography (ECC) point validation are not caught, leading to an unhandled std::terminate and crashing the V2X receiver. This disruption can cripple vehicle-to-everything communication systems.
This flaw carries a CVSS score of 7.5 (HIGH) and is exploitable over the network with no authentication or user interaction required. The National Vulnerability Database notes that affected products were not explicitly specified, but the nature of V2X systems means any deployment running this version is potentially at risk. Defenders must prioritize patching or mitigating this vulnerability to prevent attackers from disrupting critical transportation infrastructure and communications.
What This Means For You
- If your organization utilizes Vanetza V2X software, specifically version v26.02, you must immediately investigate and apply any available patches from the vendor. This vulnerability allows for remote, unauthenticated denial-of-service attacks, which could severely impact V2X communication networks and potentially disrupt transportation safety systems.
Related ATT&CK Techniques
🛡️ Detection Rules
3 rules · 6 SIEM formats3 detection rules auto-generated for this incident, mapped to MITRE ATT&CK. Sigma YAML is free — export to any SIEM format via the Intel Bot.
Vanetza V2X GeoNetworking Packet DoS Attempt — CVE-2026-37554
title: Vanetza V2X GeoNetworking Packet DoS Attempt — CVE-2026-37554
id: scw-2026-05-01-ai-1
status: experimental
level: high
description: |
Detects attempts to exploit CVE-2026-37554 in Vanetza V2X by sending specially crafted GeoNetworking packets that trigger an unhandled exception during ECC point validation, leading to a denial of service. This rule looks for specific URI patterns indicative of GeoNetworking packet processing and a 500 Internal Server Error, suggesting a crash due to the unhandled exception.
author: SCW Feed Engine (AI-generated)
date: 2026-05-01
references:
- https://shimiscyberworld.com/posts/nvd-CVE-2026-37554/
tags:
- attack.impact
- attack.t1499
logsource:
category: webserver
detection:
selection:
cs-uri|contains:
- '/GeoNetworking/packet'
cs-uri-query|contains:
- 'ECC_point_validation_failed'
sc-status:
- 500
condition: selection
falsepositives:
- Legitimate administrative activity
Source: Shimi's Cyber World · License & reuse
Indicators of Compromise
| ID | Type | Indicator |
|---|---|---|
| CVE-2026-37554 | DoS | Vanetza V2X v26.02 |
| CVE-2026-37554 | DoS | GeoNetworking packet processing pipeline |
| CVE-2026-37554 | DoS | Router::indicate() call chain |
| CVE-2026-37554 | DoS | openssl_wrapper.cpp check() function (line 19) |
| CVE-2026-37554 | DoS | parse_secured() exception handling |
Written by SCW Vulnerability Desk
Source & Attribution
| Source Platform | NVD |
| Channel | National Vulnerability Database |
| Published | May 01, 2026 at 19:16 UTC |
This content was AI-rewritten and enriched by Shimi's Cyber World based on the original source. All intellectual property rights remain with the original author.
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