What is CVE-2021-21479?

CVE-2021-21479 is a critical-severity vulnerability in SAP Scimono, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 9.1/10. Published 2021-02-09.

How severe is CVE-2021-21479?

Critical severity. CVSS v3 base score is 9.1 out of 10.

Is CVE-2021-21479 known to be exploited?

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

Vulnerability in SAP Scimono

CVE-2021-21479

In SCIMono before 0.0.19, it is possible for an attacker to inject and execute java expression compromising the availability and integrity of the system.

EPSS: 0.101 (95.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H.

Affected products

Sap Scimono
Sap Se Scimono — versions < 0.0.19

Weakness classification (CWE)

CWE-74 — Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection)

Public proof-of-concept exploits

References

cna@sap.com (x_refsource_CONFIRM, Third Party Advisory)

Frequently asked questions

What is CVE-2021-21479?: CVE-2021-21479 is a critical-severity vulnerability in SAP Scimono, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 9.1/10. Published 2021-02-09.
How severe is CVE-2021-21479?: Critical severity. CVSS v3 base score is 9.1 out of 10.
Is CVE-2021-21479 known to be exploited?: 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.