CVE-2025-27105
Vyperlang Vyper vulnerability
- Published21 Feb 2025
Description
vyper is a Pythonic Smart Contract Language for the EVM. Vyper handles AugAssign statements by first caching the target location to avoid double evaluation. However, in the case when target is an access to a DynArray and the rhs modifies the array, the cached target will evaluate first, and the bounds check will not be re-evaluated during the write portion of the statement. This issue has been addressed in version 0.4.1 and all users are advised to upgrade. There are no known workarounds for this vulnerability.
CVSS 3.1 breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:HAffected products
Remediation
Frequently asked
Is CVE-2025-27105 being actively exploited?
CVE-2025-27105 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.57%.
How severe is CVE-2025-27105?
CVE-2025-27105 has a CVSS 3.1 base score of 9.1, rated critical. EPSS estimates a 0.57% probability of exploitation.
Which products are affected by CVE-2025-27105?
Affected products include Vyperlang Vyper.
How do I fix CVE-2025-27105?
Upgrade affected software to a fixed version, for example Vyperlang Vyper 0.4.1 or later, then confirm no affected versions remain in your inventory.
How Secuno handles this
Secuno correlates vulnerabilities like CVE-2025-27105 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.
Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.