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CVE-2021-21477

46
FAUCET Score

CVE-2021-21477 is a critical Remote Code Execution (RCE) vulnerability affecting SAP Commerce Cloud versions 1808, 1811, 1905, 2005, and 2011. It allows authenticated attackers with specific privileges to inject malicious code into Drools rules, leading to the compromise of the underlying host and impacting confidentiality, integrity, and availability. With a CVSS score of 9.9, this vulnerability is considered critical due to its low attack complexity and severe potential impact. While no public exploit intelligence like Metasploit or ExploitDB entries are available, it has garnered some community discussion and media coverage, indicating awareness within the cybersecurity community.

Impacted Technologies

VendorProductVersion(s)CPE
1808CPE matchmatch criteria
cpe:2.3:a:sap:commerce:1808:*:*:*:*:*:*:*
1811CPE matchmatch criteria
cpe:2.3:a:sap:commerce:1811:*:*:*:*:*:*:*
1905CPE matchmatch criteria
cpe:2.3:a:sap:commerce:1905:*:*:*:*:*:*:*
2005CPE matchmatch criteria
cpe:2.3:a:sap:commerce:2005:*:*:*:*:*:*:*
2011CPE matchmatch criteria
cpe:2.3:a:sap:commerce:2011:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

9.9CRITICAL

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.1
Impact Score
6.0
CvssVersion
3.0

Exploit Intelligence

EPSS Score
29.85%
Probability of exploitation in next 30 days
EPSS Percentile
98.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.2985 is in the 97th percentile among its peer group of 1,128 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 1.0 Bluesky, 0.5 Mastodon, and 1.6 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

launchpad.support.sap.com
Permissions Required
wiki.scn.sap.com / wiki/pages/viewpage.action
Vendor Advisory