CVE-2025-27611
Description
A flaw was found in base-x. This vulnerability allows attackers to generate addresses that appear legitimate, tricking users into sending money to them instead of the intended ones. The problem arises from the way base-x compresses leading zeros in addresses via manipulation of the base encoding mechanism.
Statement
This vulnerability in base-x is Important because it affects the encoding and decoding of addresses in blockchain transactions. The flaw arises from mishandling of leading zero compression, enabling attackers to craft malicious encodings that deceive systems or users into misdirecting funds. As blockchain transactions are final and cannot be reversed, even a single instance of this exploit can result in permanent financial loss, making this a serious security concern beyond a Moderate issue.
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).
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 7.5 | N/A | N/A |
| Attack Vector | Network | N/A | N/A |
| Attack Complexity | Low | N/A | N/A |
| Privileges Required | None | N/A | N/A |
| User Interaction | None | N/A | N/A |
| Scope | Unchanged | N/A | N/A |
| Confidentiality | None | N/A | N/A |
| Integrity Impact | High | N/A | N/A |
| Availability Impact | None | N/A | N/A |
Vector
Red Hat: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Frequently Asked Questions
Not sure what something means? Check out our Security Glossary.
Want to get errata notifications? Sign up here.
