No exploitation reported

CVE-2021-21477

No exploitation reported by the sources we read.

Published2021-02-09
WeaknessCWE-94

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

SAP Commerce Cloud, versions - 1808,1811,1905,2005,2011, enables certain users with required privileges to edit drools rules, an authenticated attacker with this privilege will be able to inject malicious code in the drools rules which when executed leads to Remote Code Execution vulnerability enabling the attacker to compromise the underlying host enabling him to impair confidentiality, integrity and availability of the application.

Timeline

dates in UTC

2021-02-0921:15CVE publishedNVD
2026-10-2319:23EPSS crossed 10 %FIRST EPSS

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2021-21477?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2021-21477?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Sap commerce

Branch	Affected	Fixed in	Source
1808.x	= 1808	no fix published	NVD
1811.x	= 1811	no fix published	NVD
1905.x	= 1905	no fix published	NVD
2005.x	= 2005	no fix published	NVD
2011.x	= 2011	no fix published	NVD

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Advisories and patches

wiki.scn.sap.comVendor Advisory

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

NVDCVSS 3.19.9read 2026-10-23
CNACVSS 3.09.9read 2026-10-23
NVDCVSS 2.09read 2026-10-23
NVDweakness (CWE)CWE-94read 2026-10-23
FIRST EPSSEPSS score29.8 %read 2026-10-23

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Published: 2021-02-09
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2021-21477?

Is CVE-2021-21477 actively exploited?

Active exploitation of CVE-2021-21477 has not been confirmed. Its EPSS score was 29.8% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-21477?

CVE-2021-21477 has a CVSS v3 base score of 9.9 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.

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