Is vyper affected by CVE-2025-27105?

PyPI vyper is affected in <0.4.1.

Is CVE-2025-27105 being exploited?

Not on the CISA KEV list. EPSS exploit probability is 0.5%.

low

CVE-2025-27105

Q: Is CVE-2025-27105 being exploited?

Not on the CISA KEV list. EPSS exploit probability is 0.5%.

PyPI · vyper

Summary

AugAssign evaluation order causing OOB write within the object in Vyper

Severity: low
EPSS: 0.5% (p40)
Also known as: GHSA-4w26-8p97-f4jp, PYSEC-2025-31
Published: 2025-02-21

References

https://github.com/vyperlang/vyper/security/advisories/GHSA-4w26-8p97-f4jp
https://nvd.nist.gov/vuln/detail/CVE-2025-27105
https://github.com/pypa/advisory-database/tree/main/vulns/vyper/PYSEC-2025-31.yaml

Related advisories

CVE-2025-21607 — high · PyPI/vyper
CVE-2025-27104 — medium · PyPI/vyper
CVE-2025-26622 — medium · PyPI/vyper

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Sources: CISA KEV (public domain), OSV.dev & GitHub Advisory Database (CC-BY-4.0), FIRST EPSS, NVD/CWE (public domain). Served live from the Stateward advisory database.