CVE-2025-26622 is a vulnerability in Vyper, a Pythonic Smart Contract Language for the EVM. The vulnerability concerns the `sqrt()` builtin function, which utilizes the Babylonian method to calculate square roots of decimals. Unfortunately, improper handling of the oscillating final states may lead to sqrt incorrectly returning rounded up results. This issue is being addressed, and a fix is expected in version 0.4.1.
The severity of this vulnerability is classified as low, with a CVSS score of 2.3. Despite its low severity, it is crucial for users to be aware that there are no known workarounds for this vulnerability, and they should upgrade to the patched release as soon as it becomes available.
Risk to organizations includes potential incorrect calculations leading to flawed smart contract operations. While the exploitability is low, the implications of such inaccuracies in a production environment can be significant, particularly in decentralized finance applications.
Organizations should prioritize patching immediately to mitigate risks associated with this vulnerability. Users are encouraged to monitor updates from the Vyper development team regarding the patched release.
Vulnerability Details
The vulnerability is categorized under CWE-682, which pertains to incorrect calculation issues. It is essential to note that Vyper is utilized in smart contracts, and any inaccuracies can lead to severe consequences in contract execution.
Technical Analysis
The root cause of this vulnerability lies in the improper handling of the final states in the sqrt() function. This vulnerability has a high attack complexity, requiring specific conditions to exploit. Privileges required for this vulnerability are low, and no user interaction is necessary for an attacker to exploit this flaw.
Risk & Impact Analysis
The potential risks associated with this vulnerability are significant, especially in environments where Vyper is used for critical smart contracts. The blast radius includes any application relying on the sqrt() function for financial calculations. Organizations must assess their use of this function and the potential impact of erroneous outputs.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
This vulnerability affects all versions of Vyper prior to 0.4.1. Users should ensure they are using the latest version to mitigate potential risks.
Mitigation & Remediation
Organizations should prioritize upgrading to the patched version 0.4.1 of Vyper as soon as it is released. In the meantime, there are no workarounds available for this vulnerability. Continuous monitoring for updates from the Vyper development team is recommended.
Detection Guidance
Security teams should monitor logs for any unusual behavior related to the execution of smart contracts using Vyper. Any discrepancies in the outputs of mathematical functions should be investigated immediately.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2025-26622 lies in the ongoing importance of robust security practices in smart contract development. This vulnerability underscores the need for comprehensive testing and validation processes to ensure the accuracy of mathematical operations in smart contracts.
Security teams should be aware of the trends in vulnerabilities affecting smart contract languages and the need to adapt their security strategies accordingly. Regular vulnerability assessments and penetration testing can help identify potential weaknesses before they are exploited.
For teams looking to enhance their security posture, implementing a robust vulnerability management program is essential. Consider utilizing penetration testing to identify and remediate vulnerabilities proactively.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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