CVE-2026-26014
Description
A vulnerability has been identified in the Pion DTLS implementation where the use of random nonce generation with AES-GCM ciphers does not adhere to recommended cryptographic practices. Under certain conditions, this may allow remote attackers to more easily derive or reuse encryption authentication keys, potentially leading to spoofed or compromised DTLS sessions during communication.
Statement
Red Hat Product Security classified this issue as Moderate severity, because an unauthenticated remote attacker could, in theory, take advantage of the improper nonce generation in Pion DTLS to more easily obtain the authentication key for AES-GCM ciphers and spoof or manipulate DTLS traffic. However, exploitation requires specific conditions and a detailed understanding of the protocol, contributing to a higher attack complexity. Additionally, there is no direct effect on data integrity or availability solely from this issue, and successful exploitation typically requires carefully crafted, protocol-level interactions. These factors limit the practical risk in most real-world deployments.
Mitigation
No mitigation is currently available that meets Red Hat Product Security’s standards for usability, deployment, applicability, or stability.
Common Vulnerability Scoring System (CVSS) Score Details
Info alert:Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
The following CVSS metrics and score provided are preliminary and subject to review.
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 5.9 | 5.9 | N/A |
| Attack Vector | Network | Network | N/A |
| Attack Complexity | High | High | N/A |
| Privileges Required | None | None | N/A |
| User Interaction | None | None | N/A |
| Scope | Unchanged | Unchanged | N/A |
| Confidentiality | High | High | N/A |
| Integrity Impact | None | None | N/A |
| Availability Impact | None | None | N/A |
Vector
Red Hat: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Understanding the Weakness (CWE)
Access Control
Technical Impact: Bypass Protection Mechanism; Gain Privileges or Assume Identity
Potentially a replay attack, in which an attacker could send the same data twice, could be crafted if nonces are allowed to be reused. This could allow a user to send a message which masquerades as a valid message from a valid user.
Frequently Asked Questions
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