What is CVE-2023-42443?

CVE-2023-42443 is a high-severity vulnerability in Vyperlang Vyper, classified under Out-of-bounds Write. CVSS score: 8.1/10. Published 2023-09-18.

How severe is CVE-2023-42443?

High severity. CVSS v3 base score is 8.1 out of 10.

Buffer overflow in Vyperlang Vyper

CVE-2023-42443

Vyper is a Pythonic Smart Contract Language for the Ethereum Virtual Machine (EVM). In version 0.3.9 and prior, under certain conditions, the memory used by the builtins `raw_call`, `create_from_blueprint` and `create_copy_of` can be corru…

Vulnerability class: Buffer Overflow

EPSS: 0.002 (45.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Vyperlang Vyper — versions <= 0.3.9

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

https://github.com/vyperlang/vyper/security/advisories/GHSA-c647-pxm2-c52w (x_refsource_CONFIRM)
https://github.com/vyperlang/vyper/issues/3609 (x_refsource_MISC)

Frequently asked questions

What is CVE-2023-42443?: CVE-2023-42443 is a high-severity vulnerability in Vyperlang Vyper, classified under Out-of-bounds Write. CVSS score: 8.1/10. Published 2023-09-18.
How severe is CVE-2023-42443?: High severity. CVSS v3 base score is 8.1 out of 10.