CVE-2026-43988Public exploitNetwork attack vector

Remote process termination via uncaught parsing exception

Published May 26, 2026 · Updated May 26, 2026

Uncaught exception handling in Vanetza 26.02 and earlier allows remote attackers to terminate the process via a malformed packet. The ASN.1/OER certificate path constructs a canonical Certificate from untrusted data, lets std::runtime_error escape, and reaches std::terminate. No authentication or user interaction is required; a crafted network packet reliably aborts the packet-processing application.

CVSS severity7.5
High
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Uncaught exception handling in Vanetza 26.02 and earlier allows remote attackers to terminate the process via a malformed packet. The ASN.1/OER certificate path constructs a canonical Certificate from untrusted data, lets std::runtime_error escape, and reaches std::terminate. No authentication or user interaction is required; a crafted network packet reliably aborts the packet-processing application.

The record

CVE
CVE-2026-43988
Published
May 26, 2026
Updated
May 26, 2026
Vendor
Raphael Riebl
Product
Vanetza
Classifications
CWE-248, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 26, 2026CVE publishedPublication date reported by the CVE source.
  2. May 26, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=<= 26.02
  2. Affected versionversion=< 62dfe58a8342512b6e1947d75821402ada524f1a

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Raphael Riebl · Vanetzaversion=<= 26.02; version=< 62dfe58a8342512b6e1947d75821402ada524f1a

Published CVSS scores

7.5GitHubCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-248Uncaught Exception
T1499Endpoint Denial of Service

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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