What is CVE-2025-42940?

CVE-2025-42940 is a high-severity vulnerability in Sap_se Sap Commoncryptolib, classified under Out-of-bounds Write. CVSS score: 7.5/10. Published 2025-11-11.

How severe is CVE-2025-42940?

High severity. CVSS v3 base score is 7.5 out of 10.

Buffer overflow in Sap_se Sap Commoncryptolib

CVE-2025-42940

SAP CommonCryptoLib does not perform necessary boundary checks during pre-authentication parsing of manipulated ASN.1 data over the network. This may result in memory corruption followed by an application crash, hence leading to a high imp…

Vulnerability class: Buffer Overflow

EPSS: 0.001 (23.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Sap_se Sap Commoncryptolib — versions CRYPTOLIB 8

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

me.sap.com/notes/3633049
url.sap/sapsecuritypatchday

Frequently asked questions

What is CVE-2025-42940?: CVE-2025-42940 is a high-severity vulnerability in Sap_se Sap Commoncryptolib, classified under Out-of-bounds Write. CVSS score: 7.5/10. Published 2025-11-11.
How severe is CVE-2025-42940?: High severity. CVSS v3 base score is 7.5 out of 10.