What is CVE-2021-27633?

CVE-2021-27633 is a high-severity vulnerability in Sap Netweaver_abap, classified under Out-of-bounds Write. CVSS score: 7.5/10. Published 2021-06-09.

How severe is CVE-2021-27633?

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

Is CVE-2021-27633 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Buffer overflow in Sap Netweaver_abap

CVE-2021-27633

SAP NetWeaver AS for ABAP (RFC Gateway), versions - KRNL32NUC - 7.22,7.22EXT, KRNL64NUC - 7.22,7.22EXT,7.49, KRNL64UC - 8.04,7.22,7.22EXT,7.49,7.53,7.73, KERNEL - 7.22,8.04,7.49,7.53,7.73,7.77,7.81,7.82,7.83, allows an unauthenticated atta…

Vulnerability class: Buffer Overflow

EPSS: 0.015 (71.2th 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 Netweaver_abap — versions kernel_7.22, kernel_7.49, kernel_7.53
Sap Se Netweaver As For Abap (Rfc Gateway) — versions < KRNL32NUC - 7.22, < 7.22EXT, < KRNL64NUC - 7.22

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

Public proof-of-concept exploits

Onapsis/vulnerability_

References

cna@sap.com (Broken Link, Vendor Advisory)
cna@sap.com (Permissions Required, Vendor Advisory)

Frequently asked questions

What is CVE-2021-27633?: CVE-2021-27633 is a high-severity vulnerability in Sap Netweaver_abap, classified under Out-of-bounds Write. CVSS score: 7.5/10. Published 2021-06-09.
How severe is CVE-2021-27633?: High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2021-27633 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.