High severity · published Jun 9, 2021
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 -…
7.5
CVSS
1.5%
EPSS
No
On KEV
Description
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 attacker without specific knowledge of the system to send a specially crafted packet over a network which will trigger an internal error in the system due to improper input validation in method ThCPIC() causing the system to crash and rendering it unavailable. In this attack, no data in the system can be viewed or modified.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.5% · higher than 74% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
NA
Netweaver Abap · Sap
kernel_7.22; kernel_7.49; kernel_7.53; kernel_7.73; kernel_8.04; krnl32nuc_7.22; +10 more · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-27633
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-27633
Permissions Required
https://launchpad.support.sap.com/#/notes/3020209
Broken Link
https://wiki.scn.sap.com/wiki/pages/viewpage.action?pageId=578125999
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